PHP syntax cheat sheet

Abs: Get the absolute value.
Acos: Get the arc cosine value.
ada_afetch: Get the return column of the database.
ada_autocommit: Switch the automatic change function.
ada_close: Close the Adabas D link.
ada_commit: Update the Adabas D database.
ada_connect: Link to Adabas D database.
ada_exec: Execute SQL instructions.
ada_fetchrow: Get and return a column.
ada_fieldname: Get the field name.
ada_fieldtype: Get the field data form.
ada_freeresult: Release the memory of the returned data.
ada_numfields: Get the number of fields.
ada_numrows: Get the number of returned columns.
ada_result: Get the returned data.
ada_resultall: Return HTML table data.
ada_rollback: Undo the current transaction.
AddSlashes: Add slashes to strings.
apache_lookup_uri: Get all URI related information.
apache_note: Get and set the request record of Apache server.
array: Create a new array.
array_walk: Allows user-defined functions to process each element in the array.
arsort: Sort the values ​​of the array from large to small.
Asin: Get the arcsine value.
asort: Sort the values ​​of the array from small to large.
aspell_check: Check a word.
aspell_check-raw: Check a word and do not change or correct it even if it is misspelled.
aspell_new: Load a new dictionary.
aspell_suggest: Check a word and provide spelling suggestions.
Atan: Get the arctangent value.
Atan2: Calculate the arc tangent of a two number.
base64_decode: Decode the BASE64 encoded string.
base64_encode: Encode the string with BASE64.
basename: Returns the file string without path.
base_convert: The carry method for converting numbers.
bcadd: Add two high-precision numbers.
bccomp: Compare two high-precision numbers.
bcp: Divide two high-precision numbers.
bcmod: Get the remainder of a high-precision number.
bcmul: Multiply two high-precision numbers.
bcpow: Find the power of a high-precision number.
bcscale: Set the default number of decimal points for all BC libraries in the program.
bcsqrt: Find the square root of a high-precision number.
bcsub: Subtract two high-precision numbers.
bin2hex: Convert binary to hexadecimal.
BinDec: Convert binary to decimal.
Ceil: Calculate the smallest integer greater than the specified number.
chdir: Change directory.
checkdate: Verify the correctness of the date.
checkdnsrr: Check the DNS record of the specified URL.
chgrp: Change the group to which the file belongs.
chmod: Change file attributes.
Chop: Remove consecutive blank spaces.
chown: Change the owner of the file.
Chr: Returns the ordinal value of characters.
chunk_split: Divide the string into small segments.
clearstatcache: Clear the file status cache.
closedir: Close directory handle.
closelog: Close system logging.
connection_aborted: Returns true if the connection is interrupted.
connection_status: Get the connection status.
connection_timeout: Returns true if it exceeds the PHP program execution time.
convert_cyr_string: Convert Cyrillic strings into other strings.
copy: Copy the file.
Cos: Cosine calculation.
count: Count the number of elements in a variable or array.
crypt: Encrypt the string using DES encoding.
current: Returns the current element in the array.
date: Format the server's time.
dbase_add_record: Add data to the dBase data table.
dbase_close: Close the dBase data table.
dbase_create: Create dBase data table.
dbase_delete_record: Delete the data in the dBase data table.
dbase_get_record: Get the data of dBase data table.
dbase_numfields: Get the number of fields in the dBase data table.
dbase_numrecords: Get the number of columns in the dBase data table.
dbase_open: Open the dBase data table.
dbase_pack: Clean up the dBase data table.
dba_close: Close the database.
dba_delete: Delete specified data.
dba_exists: Check whether the key exists.
dba_fetch: Retrieve specified data.
dba_firstkey: Retrieve the first key value.
dba_insert: Add data.
dba_nextkey: Get the next key value.
dba_open: Open the database link.
dba_optimize: Optimize database.
dba_popen: Open and maintain the database connection.
dba_replace: Change or add data.
dba_sync: Database synchronization.
dblist: Get DBM information.
dbmclose: Close the DBM database.
dbmdelete: Delete specified data.
dbmexists: Check if the key exists.
dbmfetch: Retrieve specified data.
dbmfirstkey: Retrieve the first key name.
dbminsert: Add information.
dbmnextkey: Get the next key value.
dbmopen: Open the DBM database link.
dbmreplace: Change or add data.
debugger_off: Turn off the built-in PHP debugger.
debugger_on: Use the built-in PHP debugger.
DecBin: Convert decimal to binary.
DecHex: Convert decimal to hexadecimal.
DecOct: Convert decimal to octal.
delete: Useless items.
die: Output the message and interrupt the PHP program.
dir: Directory category object.
dirname: Get the directory name in the path.
diskfreespace: Get the remaining free space where the directory is located.
dl: Load PHP extension module.
doubleval: Convert the variable into double floating point number type.
each: Returns the index and value of the next element in the array.
easter_date: Calculate Easter date.
easter_days: Calculate the number of days between Easter and March 21st.
echo: Output string.
empty: Determine whether the variable has been set.
end: Point the internal pointer of the array to the last element.
ereg: String comparison and analysis.
eregi: String comparison and analysis, regardless of case.
eregi_replace: String comparison analysis and replacement, regardless of case.
ereg_replace: String comparison analysis and replacement.
error_log: Send an error message.
error_reporting: Set the level of error message reporting.
escapeshellcmd: Remove special symbols from strings.
eval: Substitute value into string.
exec: Execute external programs.
exit: End the PHP program.
Exp: The power of the natural logarithm e.
explode: Split the string.
extract: Import array into symbol table.
fclose: Close an open file.
FDF_close: Close FDF file.
FDF_create: Create a new FDF file.
FDF_get_file: Get the value of /F key.
FDF_get_status: Get the value of the /STATUS key.
FDF_get_value: Get the value of the field.
FDF_next_field_name: The name of the next field.
FDF_open: Open FDF file.
FDF_save: Save FDF files.
FDF_set_ap: Set the display field.
FDF_set_file: Set /F key.
FDF_set_status: Set /STATUS key.
FDF_set_value: Set the value of the field.
feof: Test whether the file indicator points to the end of the file.
fgetc: Get the character pointed to by the file pointer.
fgetcsv: Get the row pointed to by the file index and parse the CSV field.
fgets: Get the row pointed to by the file index.
fgetss: Get the line pointed to by the file index and remove the HTML language tag.
file: Read all files into array variables.
fileatime: Get the last access time of the file.
filectime: Get the last change time of the file.
filegroup: Get the group to which the file belongs.
fileinode: Get the inode value of the file.
filemtime: Get the last modification time of the file.
fileowner: Get the owner of the file.
fileperms: Get file permission settings.
filepro: Read FilePro Map file.
filepro_fieldcount: Get the number of fields.
filepro_fieldname: Get the field name.
filepro_fieldtype: Get the field type.
filepro_fieldwidth: Get the field width.
filepro_retrieve: Retrieve the specified cell data.
filepro_rowcount: Get the number of columns.
filesize: Get the size of the file.
filetype: Get the file type.
file_exists: Check whether the file exists.
flock: Lock the file.
Floor: Calculate the largest integer less than the specified number.
flush: Clear the output buffer.
fopen: Open a file or URL.
fpassthru: Output all remaining data.
fputs: Write to file indicators.
fread: Read files in bytes.
FrenchToJD: Convert French Republican calendar to Caesar Day counting.
fseek: Mobile file indicators.
fsockopen: Open the network Socket link.
ftell: Get the file read and write index position.
ftp_cdup: Return to the upper directory.
ftp_chdir: Change the path.
ftp_connect: Open FTP connection.
ftp_delete: Delete the file.
ftp_fget: Download the file and save it in the opened file.
ftp_fput: Upload an open file.
ftp_get: Download files.
ftp_login: Log in to the FTP server.
ftp_mdtm: Get the last modification time of the specified file.
ftp_mkdir: Create a new directory.
ftp_nlist: List all files in the specified directory.
ftp_pasv: Switch active and passive transmission mode.
ftp_put: Upload files.
ftp_pwd: Get the current path.
ftp_quit: Close the FTP connection.
ftp_rawlist: List all files in the specified directory in detail.
ftp_rename: Rename the file.
ftp_rmdir: Delete directory.
ftp_size: Get the size of the specified file.
ftp_systype: Display server system.
function_exists: Check whether the function has been defined.
fwrite: Write files in binary bit mode.
getallheaders: Get all HTTP variable values.
getdate: Get time and date information.
getenv: Get the system environment variables
gethostbyaddr: Return the machine name.
gethostbyname: Returns the IP address.
gethostbynamel: Returns all IPs of the machine name.
GetImageSize: Get the length and width of the image.
getlastmod: Returns the last modification time of the web page.
getmxrr: Get the MX field of the DNS record of the specified URL.
getmyinode: Returns the inode value of the web page.
getmypid: Returns the PHP trip code.
getmyuid: Returns the PHP user code.
getrandmax: The maximum value of random numbers.
getrusage: Returns the system resource usage.
gettimeofday: Get the current time.
gettype: Get the type of the variable.
get_cfg_var: Get the setting option value of PHP.
get_current_user: Get the owner name of the PHP trip.
get_magic_quotes_gpc: Get the value of PHP environment variable magic_quotes_gpc.
get_magic_quotes_runtime: Get the value of PHP environment variable magic_quotes_runtime.
get_meta_tags: Extract all meta-tagged data from the file.
gmdate: Get the time difference between the current time and GMT.
gmmktime: Get the Greenwich Mean Time of the UNIX timestamp.
GregorianToJD: Convert the Gregorian calendar to Caesar day counting.
gzclose: Close the compressed file.
gzeof: Determine whether it is at the end of the compression file.
gzfile: Read the compressed file into the array.
gzgetc: Read characters in compressed files.
gzgets: Read strings in compressed files.
gzgetss: Read the string in the compressed file and remove the HTML instructions.
gzopen: Open compressed files.
gzpassthru: All data after decompressing the indicator.
gzputs: Write data into compressed files.
gzread: Read a string of specified length from a compressed file.
gzrewind: Reset the compressed file index.
gzseek: Set the compressed file index to the specified location.
gztell: Get the compressed file index.
gzwrite: Data write pressure
header: Send HTTP protocol header to the browser
HexDec: Convert hexadecimal to decimal.
htmlentities: Convert all characters into HTML strings.
htmlspecialchars: Convert special characters into HTML format.
hw_Children: Get the child object code.
hw_ChildrenObj: Get the object record of the child object.
hw_Close: Close Hyperwave connection.
hw_Connect: Connect to the Hyperwave server.
hw_Cp: Copy object.
hw_Deleteobject: Delete object.
hw_DocByAnchor: Get the document object code of the specified anchor.
hw_DocByAnchorObj: Get the document object of the specified anchor.
hw_DocumentAttributes: Get the attributes of the specified document object.
hw_DocumentBodyTag: Get the document body tag of the specified document object.
hw_DocumentContent: Get the content of the specified document object.
hw_DocumentSetContent: Reset the content of the specified document object.
hw_DocumentSize: Get the file size.
hw_EditText: Change text files.
hw_Error: Get the error code.
hw_ErrorMsg: Get error message.
hw_Free_Document: Release the memory used by the file.
hw_GetAnchors: Get the link anchors of the file.
hw_GetAnchorsObj: Get the link anchor record of the file.
hw_GetAndLock: Get and lock the object.
hw_GetChildColl: Get the IDs of child objects.
hw_GetChildCollObj: Get the information of child objects.
hw_GetChildDocColl: Get a collection of all sub-documents.
hw_GetChildDocCollObj: Get all sub-document collection records.
hw_GetObject: Get the object.
hw_GetObjectByQuery: Search for objects.
hw_GetObjectByQueryColl: Search for aggregated objects.
hw_GetObjectByQueryCollObj: Search for aggregated objects.
hw_GetObjectByQueryObj: Search for objects.
hw_GetParents: Get the ID of the parent object.
hw_GetParentsObj: Get the information of the parent object.
hw_GetRemote: Get remote files.
hw_GetRemoteChildren: Get the remote child file.
hw_GetSrcByDestObj: Get the file content of the specified purpose.
hw_GetText: Get a plain text file.
hw_GetUsername: Current user name.
hw_Identify: User identity confirmation.
hw_InCollections: Check the collection of objects.
hw_Info: Connection information.
hw_InsColl: Insert aggregation.
hw_InsDoc: Insert file.
hw_InsertDocument: Upload files.
hw_InsertObject: Insert object record.
hw_Modifyobject: Modify object records.
hw_Mv: Move objects.
hw_New_Document: Create a new document.
hw_Objrec2Array: Convert object records to arrays.
hw_OutputDocument: Output file.
hw_pConnect: Connect to the Hyperwave server.
hw_PipeDocument: Get the file.
hw_Root: Get the root object code.
hw_Unlock: Unlock.
hw_Who: List current users.
ibase_bind: Link PHP variables to InterBase parameters.
ibase_close: Close the InterBase server connection.
ibase_connect: Open InterBase server connection.
ibase_execute: Execute SQL command section.
ibase_fetch_row: Returns each column of a single column.
ibase_free_query: Release the memory occupied by query instructions.
ibase_free_result: Release and return the occupied memory.
ibase_pconnect: Keep the InterBase server connected.
ibase_prepare: Analyze SQL syntax.
ibase_query: Send a query string.
ibase_timefmt: Set the time format.
ifxus_close_slob: Delete slob objects.
ifxus_create_slob: Create a slob object.
ifxus_open_slob: Open the slob object.
ifxus_read_slob: Read the specified number of slob objects.
ifxus_seek_slob: Set the current file or seek location.
ifxus_tell_slob: Return the current file or find the location.
ifxus_write_slob: Write the string into the slob object.
ifx_affected_rows: Get the number of columns affected by the last operation of Informix.
ifx_blobinfile_mode: Set long bit object mode.
ifx_byteasvarchar: Set the byte mode default value.
ifx_close: Close the Informix server connection.
ifx_connect: Open the Informix server connection.
ifx_copy_blob: Copy long bit objects.
ifx_create_blob: Create a long bit object.
ifx_create_char: Create character object.
ifx_do: Query string has been prepared for execution.
ifx_error: Get the last error of Informix.
ifx_errormsg: Get the last error message of Informix.
ifx_fetch_row: Returns each column of a single column.
ifx_fieldproperties: Lists the SQL field properties of Informix.
ifx_fieldtypes: Lists the SQL fields of Informix.
ifx_free_blob: Delete long bit objects.
ifx_free_char: Delete character objects.
ifx_free_result: Release and return the occupied memory.
ifx_free_slob: Delete slob objects.
ifx_getsqlca: Get the sqlca information after query.
ifx_get_blob: Get long bit object.
ifx_get_char: Get character object.
ifx_htmltbl_result: Convert the data returned by query into an HTML table.
ifx_nullformat: Set the default value of null character mode.
ifx_num_fields: Get the number of fields returned.
ifx_num_rows: Get the number of columns returned.
ifx_pconnect: Enable long-term connection to the Informix server.
ifx_prepare: Prepare query string.
ifx_query: Send a query string.
ifx_textasvarchar: Set the text mode default value.
ifx_update_blob: Change long bit objects.
ifx_update_char: Change character object.
ignore_user_abort: Whether the program is executed after the connection is interrupted.
ImageArc: Draw an arc.
ImageChar: Write horizontal characters.
ImageCharUp: Write straight characters.
ImageColorAllocate: Match colors.
ImageColorAt: Get the index value of the color of the specified point in the image.
ImageColorClosest: Calculate the color closest to the specified color in the color table.
ImageColorExact: Calculate the specified color index value on the color table.
ImageColorResolve: Calculate the index value of the specified or closest color on the color table.
ImageColorSet: Set the color of the specified index on the color table.
ImageColorsForIndex: Get the color of the specified index on the color table.
ImageColorsTotal: Calculate the number of colors in the image.
ImageColorTransparent: Specify a transparent background color.
ImageCopyResized: Copy a new image and resize it.
ImageCreate: Create a new image.
ImageCreateFromGIF: Take out the GIF graphic.
ImageCreateFromPNG: Take out PNG graphics.
ImageDashedLine: Draw a dashed line.
ImageDestroy: End the graphic.
ImageFill: Graphic coloring.
ImageFilledPolygon: Polygon area coloring.
ImageFilledRectangle: Rectangular area coloring.
ImageFillToBorder: Coloring within the specified color area.
ImageFontHeight: Get the height of the font.
ImageFontWidth: Get the width of the font.
ImageGIF: Create GIF graphics.
ImageInterlace: Whether to use interlaced display or not.
ImageLine: Draw a solid line.
ImageLoadFont: Load bitmap font.
ImagePNG: Create PNG graphics.
ImagePolygon: Draw polygon.
ImagePSBBox: Calculate the area occupied by PostScript text.
ImagePSEncodeFont: Convert PostScript fonts into vector fonts.
ImagePSFreeFont: Remove PostScript fonts.
ImagePSLoadFont: Load PostScript font.
ImagePSText: Write PostScript text into the image.
ImageRectangle: Draw a rectangle.
ImageSetPixel: Draw points.
ImageString: Draw horizontal string.
ImageStringUp: Draw vertical string.
ImageSX: Get the width of the image.
ImageSY: Get the height of the image.
ImageTTFBBox: Calculate the area occupied by TTF text.
ImageTTFText: Write TTF text into the image.
imap_8bit: Convert eight bits to qp encoding.
imap_alerts: All warning messages.
imap_append: Append a string to the specified mailbox.
imap_base64: Decode BASE64 encoding.
imap_binary: Convert octets to base64 encoding.
imap_body: Read the text of the letter.
imap_check: Return email information.
imap_clearflag_full: Clear the message flag.
imap_close: Close the IMAP link.
imap_createmailbox: Create a new mailbox.
imap_delete: Mark emails for deletion.
imap_deletemailbox: Delete existing mailbox.
imap_errors: All error messages.
imap_expunge: Delete marked messages.
imap_fetchbody: Fetch the specified section from the message body.
imap_fetchheader: Get the original header.
imap_fetchstructure: Get the structure information of a letter.
imap_getmailboxes: Get all mail details.
imap_getsubscribed: List all subscription emails.
imap_header: Get the header information of a certain letter.
imap_headers: Get header information of all letters.
imap_last_error: The last error message.
imap_listmailbox: Get the mailbox list.
imap_listsubscribed: Get the subscription email list.
imap_mailboxmsginfo: Get the current mailbox information.
imap_mail_copy: Copy the specified letter to another mailbox.
imap_mail_move: Move the specified mail to another mailbox.
imap_msgno: List consecutive letters of UID.
imap_num_msg: Get the number of letters.
imap_num_recent: Get the number of new letters.
imap_open: Open the IMAP link.
imap_ping: Check whether IMAP is connected.
imap_qprint: Convert qp encoding into octets.
imap_renamemailbox: Change the name of the mailbox.
imap_reopen: Reopen the IMAP connection.
imap_rfc822_parse_adrlist: Parse email addresses.
imap_rfc822_write_address: Email address standardization.
imap_scanmailbox: Search for specific strings in letters.
imap_search: Search for letters with specified criteria.
imap_setflag_full: Set the message flag.
imap_sort: Sort message headers.
imap_status: Current status information.
imap_subscribe: Subscription email.
imap_uid: Get the letter UID.
imap_undelete: Undelete email mark.
imap_unsubscribe: Unsubscribe email.
implode: Convert array into string.
intval: Convert the variable to integer type.
iptcparse: Use IPTC module to parse bit data.
isset: Determine whether the variable has been set.
is_array: Determine whether the variable type is an array type.
is_dir: Test whether the file is a directory.
is_double: Determine whether the variable type is a double floating point number type.
is_executable: Test whether the file is executable.
is_file: Test whether the file is a normal file.
is_float: Determine whether the variable type is a floating point number type.
is_int: Determine whether the variable type is an integer type.
is_integer: Determine whether the variable type is a long integer type.
is_link: Test whether the file is a link file.
is_long: Determine whether the variable type is a long integer type.
is_object: Determine whether the variable type is an object type.
is_readable: Test whether the file can be read.
is_real: Determine whether the variable type is a real number type.
is_string: Determine whether the variable type is a string type.
is_writeable: Test whether the file can be written.
JDDayOfWeek: Returns the day of the week the date is on.
JDMonthName: Returns the month name.
JDToFrench: Convert the Caesar Day count to the French Republican calendar.
JDToGregorian: Convert Caesar Day Count (Julian Day Count) to Gregorian calendar (Gregorian date).
JDToJewish: Convert Caesar Day counting to Jewish calendar.
JDToJulian: Convert Caesar day counting to Caesar calendar.
JewishToJD: Convert Jewish calendar to Caesar day counting.
join: Convert array into string.
JulianToJD: Convert Caesar calendar to Caesar day counting.

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key: Get the index data in the array.
ksort: Sort the elements of the array by index.
ldap_add: Add entries to the LDAP directory.
ldap_bind: Bind the LDAP directory.
ldap_close: Close the LDAP connection.
ldap_connect: Connect to the LDAP server.
ldap_count_entries: Number of search results.
ldap_delete: Delete the specified resource.
ldap_dn2ufn: Convert dn into an easy-to-read name.
ldap_explode_dn: Expand the field of dn.
ldap_first_attribute: Get the attributes of the first resource.
ldap_first_entry: Get the first result code.
ldap_free_result: Release the returned data memory.
ldap_get_attributes: Get the attributes of the returned data.
ldap_get_dn: Get the DN value.
ldap_get_entries: Get all returned data.
ldap_get_values: Get all returned values.
ldap_list: List the simplified table.
ldap_modify: Change the attributes of the LDAP directory.
ldap_mod_add: Add attributes to the LDAP directory.
ldap_mod_del: Delete attributes of LDAP directory.
ldap_mod_replace: The new LDAP name is replaced with the old attribute.
ldap_next_attribute: Get the next attribute of the returned data.
ldap_next_entry: Get the next result code.
ldap_read: Get the current data attributes.
ldap_search: List tree-like simplified tables.
ldap_unbind: End the LDAP connection.
leak: Leak memory.
link: Create a hard link.
linkinfo: Get link information.
list: List the values ​​of elements in the array.
Log: Natural logarithm value.
Log10: Logarithmic value of 10 base.
lstat: Get link file related information.
ltrim: Remove continuous whitespace.
mail: Send an email.
max: Get the maximum value.
mcrypt_cbc: Use CBC to encrypt/decrypt data.
mcrypt_cfb: Use CFB to encrypt/decrypt data.
mcrypt_create_iv: Initialize the vector from a random source.
mcrypt_ecb: Use ECB to encrypt/decrypt data.
mcrypt_get_block_size: Get the block size of the encoding method.
mcrypt_get_cipher_name: Get the name of the encoding method.
mcrypt_get_key_size: Get the encoding key size.
mcrypt_ofb: Use OFB to encrypt/decrypt data.
md5: Calculate the MD5 hash of a string.
mhash: Calculate hash value.
mhash_count: Get the maximum value of hash ID.
mhash_get_block_size: Get the block size in hash mode.
mhash_get_hash_name: Get the hash algorithm name.
microtime: Get the millionth of a second value of the UNIX timestamp of the current time.
min: Get the minimum value.
mkdir: Create a directory.
mktime: Get UNIX timestamp.
msql: Send query string.
msql_affected_rows: Get the number of columns affected by the last operation of mSQL.
msql_close: Close the mSQL database connection.
msql_connect: Open mSQL database connection.
msql_createdb: Create a new mSQL database.
msql_create_db: Create a new mSQL database.
msql_data_seek: Mobile internal return indicator.
msql_dbname: Get the name of the current database.
msql_dropdb: Delete the specified mSQL database.
msql_drop_db: Delete the specified mSQL database.
msql_error: Get the last error message.
msql_fetch_array: Return array data.
msql_fetch_field: Get field information.
msql_fetch_object: Return object data.
msql_fetch_row: Returns each column of a single column.
msql_fieldflags: Get the flags of the field.
msql_fieldlen: Get the length of the field.
msql_fieldname: Returns the name of the specified field.
msql_fieldtable: Get the name of the data table (table) of the field.
msql_fieldtype: Get the field type.
msql_field_seek: Set the indicator to a certain field of the returned value.
msql_freeresult: Release the memory occupied by the returned data.
msql_free_result: Release the occupied memory passed back.
msql_listdbs: List available databases (database).
msql_listfields: List the fields of the specified data table.
msql_listtables: List the data tables (tables) of the specified database.
msql_list_dbs: List available databases (database).
msql_list_fields: List the fields of the specified data table.
msql_list_tables: List the data tables (tables) of the specified database.
msql_numfields: Get the number of fields returned.
msql_numrows: Get the number of columns returned.
msql_num_fields: Get the number of fields returned.
msql_num_rows: Get the number of columns returned.
msql_pconnect: Enable long-term connection to mSQL server.
msql_query: Send a query string.
msql_regcase: Return the string in uppercase and lowercase characters verbatim.
msql_result: Get the result of query.
msql_selectdb: Select a database.
msql_select_db: Select a database.
msql_tablename: Returns the name of the specified data table.
mssql_affected_rows: Get the number of columns affected by the last query.
mssql_close: Close the connection to the database.
mssql_connect: Connect to the database.
mssql_data_seek: Moving column indicator.
mssql_fetch_array: Return array data.
mssql_fetch_field: Get field information.
mssql_fetch_object: Returns object data.
mssql_fetch_row: Returns each column of a single column.
mssql_field_seek: Set the indicator to a certain field of the returned value.
mssql_free_result: Release and return the occupied memory.
mssql_num_fields: Get the number of fields returned.
mssql_num_rows: Get the number of columns returned.
mssql_pconnect: Enable long-term connection to MS SQL server.
mssql_query: Send a query string.
mssql_result: Get the result of query.
mssql_select_db: Select a database.
mt_getrandmax: The maximum value of random numbers.
mt_rand: Get random values.
mt_srand: Set random seed.
mysql_affected_rows: Get the number of columns affected by the last MySQL operation.
mysql_close: Close the MySQL server connection.
mysql_connect: Open the MySQL server connection.
mysql_create_db: Create a new MySQL database.
mysql_data_seek: Move the internal return indicator.
mysql_db_query: Send query string (query) to MySQL database.
mysql_drop_db: Remove the database.
mysql_errno: Return error message code.
mysql_error: Return error message.
mysql_fetch_array: Return array data.
mysql_fetch_field: Get field information.
mysql_fetch_lengths: Returns the maximum length of each column of data in a single column.
mysql_fetch_object: Return object data.
mysql_fetch_row: Returns each column of a single column.
mysql_field_flags: Get the flags of the current field.
mysql_field_len: Get the length of the current field.
mysql_field_name: Returns the name of the specified field.
mysql_field_seek: Set the indicator to a certain field of the returned value.
mysql_field_table: Get the name of the data table (table) of the current field.
mysql_field_type: Get the type of the current field.
mysql_free_result: Release and return the occupied memory.
mysql_insert_id: Returns the ID of the last INSERT command used.
mysql_list_dbs: Lists the databases available on the MySQL server.
mysql_list_fields: List the fields (fields) of the specified data table.
mysql_list_tables: List the data tables (tables) of the specified database.
mysql_num_fields: Get the number of fields returned.
mysql_num_rows: Get the number of columns returned.
mysql_pconnect: Enable long-term connection to the MySQL server.
mysql_query: Send a query string.
mysql_result: Get the result of query.
mysql_select_db: Select a database.
mysql_tablename: Get the name of the data table.
next: Move the internal index of the array backward.
nl2br: Convert newline characters to
.
number_format: Format number string.
OCIBindByName: Make dynamic SQL available using PHP variables.
OCIColumnIsNULL: Tests whether the returned row is empty.
OCIColumnSize: Get the size of the field type.
OCICommit: Put Oracle's transaction processing into practice.
OCIDefineByName: Allows the SELECT command to use PHP variables.
OCIExecute: Execute the command section of Oracle.
OCIFetch: Get a row (row) of the returned data.
OCIFetchInto: Retrieve Oracle data and put it into the array.
OCILogOff: Close the connection with Oracle.
OCILogon: Open the connection with Oracle.
OCINewDescriptor: Initial new LOB/FILE description.
OCINumRows: Get the number of affected fields.
OCIParse: Analyze SQL syntax.
OCIResult: Get a column (column) from the data in the current column (row).
OCIRollback: Undo the current transaction.
OctDec: Convert octal to decimal.
odbc_autocommit: Switch the automatic change function.
odbc_binmode: Set the binary data processing method.
odbc_close: Close the ODBC connection.
odbc_close_all: Close all ODBC connections.
odbc_commit: Update the ODBC database.
odbc_connect: Connect to ODBC database.
odbc_cursor: Get the cursor name.
odbc_do: Execute SQL instructions.
odbc_exec: Execute SQL instructions.
odbc_execute: Execute preset SQL instructions.
odbc_fetch_into: Get the specified column returned.
odbc_fetch_row: Get and return a column.
odbc_field_len: Get the field data length.
odbc_field_name: Get the field name.
odbc_field_type: Get the field data form.
odbc_free_result: Release the memory of the returned data.
odbc_longreadlen: Set the maximum value of the returned column.
odbc_num_fields: Get the number of fields.
odbc_num_rows: Get the number of returned columns.
odbc_pconnect: Long-term connection to ODBC database.
odbc_prepare: Preset SQL instructions.
odbc_result: Get the returned data.
odbc_result_all: Returns HTML table data.
odbc_rollback: Undo the current transaction.
odbc_setoption: Adjust ODBC settings.
opendir: Open directory handle.
openlog: Open system logging.
Ora_Bind: Link PHP variables to Oracle parameters.
Ora_Close: Close an Oracle cursor.
Ora_ColumnName: Get the name of the column (Column) returned by Oracle.
Ora_ColumnSize: Get the size of the column type.
Ora_ColumnType: Get the type of column (Column) returned by Oracle.
Ora_Commit: Put Oracle's transaction processing into practice.
Ora_CommitOff: Turn off the function of automatically executing Oracle transaction changes.
Ora_CommitOn: Turn on the function of automatically executing Oracle transaction changes.
Ora_Do: Fast SQL query.
Ora_Error: Get Oracle error message.
Ora_ErrorCode: Get Oracle error code.
Ora_Exec: Execute the command section of Oracle.
Ora_Fetch: Get a row (row) of the returned data.
Ora_FetchInto: Retrieve Oracle data and put it into the array.
Ora_GetColumn: Get a column (column) from the data of the returned column (row).
Ora_Logoff: End the connection with Oracle.
Ora_Logon: Open the connection with Oracle.
Ora_Numcols: Get the number of fields.
Ora_Open: Open Oracle's cursor.
Ora_Parse: Analyze SQL syntax.
Ora_PLogon: Open a long-term connection with Oracle.
Ora_Rollback: Undo the current transaction.
Ord: Returns the ordinal value of the character.
pack: Compress data into bit strings.
parse_str: Parse query string into variables.
parse_url: Parse URL string.
passthru: Execute external programs without processing the output data.
pclose: Close the file.
PDF_add_annotation: Add annotation.
PDF_add_outline: Add bookmarks to the current page.
PDF_arc: Draw arc.
PDF_begin_page: Begin PDF file page.
PDF_circle: Draw a circle.
PDF_clip: Combine all vectors.
PDF_close: Close PDF file.
PDF_closepath: Form a closed vector shape.
PDF_closepath_fill_stroke: Form a closed vector shape by drawing a line along the vector and filling it.
PDF_closepath_stroke: Form a closed vector shape and draw a line along the vector.
PDF_close_image: Close the image file.
PDF_continue_text: Output text.
PDF_curveto: Draw a Bézier curve.
PDF_endpath: Close the current vector.
PDF_end_page: Close the PDF file page.
PDF_execute_image: Place the image in the PDF file to the specified location.
PDF_fill: Fill the current vector.
PDF_fill_stroke: Fill the current vector and draw a line along the vector.
PDF_get_info: Return file information.
PDF_lineto: Draw a straight line.
PDF_moveto: Set the coordinate point for processing.
PDF_open: Create a new PDF file.
PDF_open_gif: Open GIF image file.
PDF_open_jpeg: Open JPEG image file.
PDF_open_memory_image: Open the memory image file.
PDF_place_image: Place the image into the specified location of the PDF file.
PDF_put_image: Place images into PDF files.
PDF_rect: Draw a rectangle.
PDF_restore: Restore environment variables.
PDF_rotate: Rotate objects.
PDF_save: Save environment variables.
PDF_scale: Scale object.
PDF_setdash: Set the dotted line style.
PDF_setflat: 设定平滑值。 
PDF_setgray: 指定绘图的颜色为灰阶并填入。 
PDF_setgray_fill: 指定填入的颜色为灰阶。 
PDF_setgray_stroke: 指定绘图的颜色为灰阶。 
PDF_setlinecap: 设定 linecap 参数。 
R>ldap_get_dn: 取得 DN 值。 
ldap_get_entries: 取得全部传回资料。 
ldap_get_values: 取得全部传回值。 
ldap_list: 列出简表。 
ldap_modify: 改变 LDAP 名录的属性。 
ldap_mod_add: 增加 LDAP 名录的属性。 
ldap_mod_del: 删除 LDAP 名录的属性。 
ldap_mod_replace: 新的 LDAP 名录取代旧属性。 
ldap_next_attribute: Get the next attribute of the returned data.
ldap_next_entry: Get the next result code.
ldap_read: Get the current data attributes.
ldap_search: List tree-like simplified tables.
ldap_unbind: End the LDAP connection.
leak: Leak memory.
link: Create a hard link.
linkinfo: Get link information.
list: List the values ​​of elements in the array.
Log: Natural logarithm value.
Log10: Logarithmic value of 10 base.
lstat: Get link file related information.
ltrim: Remove continuous whitespace.
mail: Send an email.
max: Get the maximum value.
mcrypt_cbc: Use CBC to encrypt/decrypt data.
mcrypt_cfb: Use CFB to encrypt/decrypt data.
mcrypt_create_iv: Initialize the vector from a random source.
mcrypt_ecb: Use ECB to encrypt/decrypt data.
mcrypt_get_block_size: Get the block size of the encoding method.
mcrypt_get_cipher_name: Get the name of the encoding method.
mcrypt_get_key_size: Get the encoding key size.
mcrypt_ofb: Use OFB to encrypt/decrypt data.
md5: Calculate the MD5 hash of a string.
mhash: Calculate hash value.
mhash_count: Get the maximum value of hash ID.
mhash_get_block_size: Get the block size in hash mode.
mhash_get_hash_name: Get the hash algorithm name.
microtime: Get the millionth of a second value of the UNIX timestamp of the current time.
min: Get the minimum value.
mkdir: Create a directory.
mktime: Get UNIX timestamp.
msql: Send query string.
msql_affected_rows: Get the number of columns affected by the last operation of mSQL.
msql_close: Close the mSQL database connection.
msql_connect: Open mSQL database connection.
msql_createdb: Create a new mSQL database.
msql_create_db: Create a new mSQL database.
msql_data_seek: Mobile internal return indicator.
msql_dbname: Get the name of the current database.
msql_dropdb: Delete the specified mSQL database.
msql_drop_db: Delete the specified mSQL database.
msql_error: Get the last error message.
msql_fetch_array: Return array data.
msql_fetch_field: Get field information.
msql_fetch_object: Return object data.
msql_fetch_row: Returns each column of a single column.
msql_fieldflags: Get the flags of the field.
msql_fieldlen: Get the length of the field.
msql_fieldname: Returns the name of the specified field.
msql_fieldtable: Get the name of the data table (table) of the field.
msql_fieldtype: Get the field type.
msql_field_seek: Set the indicator to a certain field of the returned value.
msql_freeresult: Release the memory occupied by the returned data.
msql_free_result: Release the occupied memory passed back.
msql_listdbs: List available databases (database).
msql_listfields: List the fields of the specified data table.
msql_listtables: List the data tables (tables) of the specified database.
msql_list_dbs: List available databases (database).
msql_list_fields: List the fields of the specified data table.
msql_list_tables: List the data tables (tables) of the specified database.
msql_numfields: Get the number of fields returned.
msql_numrows: Get the number of columns returned.
msql_num_fields: Get the number of fields returned.
msql_num_rows: Get the number of columns returned.
msql_pconnect: Enable long-term connection to mSQL server.
msql_query: Send a query string.
msql_regcase: Return the string in uppercase and lowercase characters verbatim.
msql_result: Get the result of query.
msql_selectdb: Select a database.
msql_select_db: Select a database.
msql_tablename: Returns the name of the specified data table.
mssql_affected_rows: Get the number of columns affected by the last query.
mssql_close: Close the connection to the database.
mssql_connect: Connect to the database.
mssql_data_seek: Moving column indicator.
mssql_fetch_array: Return array data.
mssql_fetch_field: Get field information.
mssql_fetch_object: Returns object data.
mssql_fetch_row: Returns each column of a single column.
mssql_field_seek: Set the indicator to a certain field of the returned value.
mssql_free_result: Release and return the occupied memory.
mssql_num_fields: Get the number of fields returned.
mssql_num_rows: Get the number of columns returned.
mssql_pconnect: Enable long-term connection to MS SQL server.
mssql_query: Send a query string.
mssql_result: Get the result of query.
mssql_select_db: Select a database.
mt_getrandmax: The maximum value of random numbers.
mt_rand: Get random values.
mt_srand: Set random seed.
mysql_affected_rows: Get the number of columns affected by the last MySQL operation.
mysql_close: Close the MySQL server connection.
mysql_connect: Open the MySQL server connection.
mysql_create_db: Create a new MySQL database.
mysql_data_seek: Move the internal return indicator.
mysql_db_query: Send query string (query) to MySQL database.
mysql_drop_db: Remove the database.
mysql_errno: Return error message code.
mysql_error: Return error message.
mysql_fetch_array: Return array data.
mysql_fetch_field: Get field information.
mysql_fetch_lengths: Returns the maximum length of each column of data in a single column.
mysql_fetch_object: Return object data.
mysql_fetch_row: Returns each column of a single column.
mysql_field_flags: Get the flags of the current field.
mysql_field_len: Get the length of the current field.
mysql_field_name: Returns the name of the specified field.
mysql_field_seek: Set the indicator to a certain field of the returned value.
mysql_field_table: Get the name of the data table (table) of the current field.
mysql_field_type: Get the type of the current field.
mysql_free_result: Release and return the occupied memory.
mysql_insert_id: Returns the ID of the last INSERT command used.
mysql_list_dbs: Lists the databases available on the MySQL server.
mysql_list_fields: List the fields (fields) of the specified data table.
mysql_list_tables: List the data tables (tables) of the specified database.
mysql_num_fields: Get the number of fields returned.
mysql_num_rows: Get the number of columns returned.
mysql_pconnect: Enable long-term connection to the MySQL server.
mysql_query: Send a query string.
mysql_result: Get the result of query.
mysql_select_db: Select a database.
mysql_tablename: Get the name of the data table.
next: Move the internal index of the array backward.
nl2br: Convert newline characters to
.
number_format: Format number string.
OCIBindByName: Make dynamic SQL available using PHP variables.
OCIColumnIsNULL: Tests whether the returned row is empty.
OCIColumnSize: Get the size of the field type.
OCICommit: Put Oracle's transaction processing into practice.
OCIDefineByName: Allows the SELECT command to use PHP variables.
OCIExecute: Execute the command section of Oracle.
OCIFetch: Get a row (row) of the returned data.
OCIFetchInto: Retrieve Oracle data and put it into the array.
OCILogOff: Close the connection with Oracle.
OCILogon: Open the connection with Oracle.
OCINewDescriptor: Initial new LOB/FILE description.
OCINumRows: Get the number of affected fields.
OCIParse: Analyze SQL syntax.
OCIResult: Get a column (column) from the data in the current column (row).
OCIRollback: Undo the current transaction.
OctDec: Convert octal to decimal.
odbc_autocommit: Switch the automatic change function.
odbc_binmode: Set the binary data processing method.
odbc_close: Close the ODBC connection.
odbc_close_all: Close all ODBC connections.
odbc_commit: Update the ODBC database.
odbc_connect: Connect to ODBC database.
odbc_cursor: Get the cursor name.
odbc_do: Execute SQL instructions.
odbc_exec: Execute SQL instructions.
odbc_execute: Execute preset SQL instructions.
odbc_fetch_into: Get the specified column returned.
odbc_fetch_row: Get and return a column.
odbc_field_len: Get the field data length.
odbc_field_name: Get the field name.
odbc_field_type: Get the field data form.
odbc_free_result: Release the memory of the returned data.
odbc_longreadlen: Set the maximum value of the returned column.
odbc_num_fields: Get the number of fields.
odbc_num_rows: Get the number of returned columns.
odbc_pconnect: Long-term connection to ODBC database.
odbc_prepare: Preset SQL instructions.
odbc_result: Get the returned data.
odbc_result_all: Returns HTML table data.
odbc_rollback: Undo the current transaction.
odbc_setoption: Adjust ODBC settings.
opendir: Open directory handle.
openlog: Open system logging.
Ora_Bind: Link PHP variables to Oracle parameters.
Ora_Close: Close an Oracle cursor.
Ora_ColumnName: Get the name of the column (Column) returned by Oracle.
Ora_ColumnSize: Get the size of the column type.
Ora_ColumnType: Get the type of column (Column) returned by Oracle.
Ora_Commit: Put Oracle's transaction processing into practice.
Ora_CommitOff: Turn off the function of automatically executing Oracle transaction changes.
Ora_CommitOn: Turn on the function of automatically executing Oracle transaction changes.
Ora_Do: Fast SQL query.
Ora_Error: Get Oracle error message.
Ora_ErrorCode: Get Oracle error code.
Ora_Exec: Execute the command section of Oracle.
Ora_Fetch: Get a row (row) of the returned data.
Ora_FetchInto: Retrieve Oracle data and put it into the array.
Ora_GetColumn: Get a column (column) from the data of the returned column (row).
Ora_Logoff: End the connection with Oracle.
Ora_Logon: Open the connection with Oracle.
Ora_Numcols: Get the number of fields.
Ora_Open: Open Oracle's cursor.
Ora_Parse: Analyze SQL syntax.
Ora_PLogon: Open a long-term connection with Oracle.
Ora_Rollback: Undo the current transaction.
Ord: Returns the ordinal value of the character.
pack: Compress data into bit strings.
parse_str: Parse query string into variables.
parse_url: Parse URL string.
passthru: Execute external programs without processing the output data.
pclose: Close the file.
PDF_add_annotation: Add annotation.
PDF_add_outline: Add bookmarks to the current page.
PDF_arc: Draw arc.
PDF_begin_page: Begin PDF file page.
PDF_circle: Draw a circle.
PDF_clip: Combine all vectors.
PDF_close: Close PDF file.
PDF_closepath: Form a closed vector shape.
PDF_closepath_fill_stroke: Form a closed vector shape by drawing a line along the vector and filling it.
PDF_closepath_stroke: Form a closed vector shape and draw a line along the vector.
PDF_close_image: Close the image file.
PDF_continue_text: Output text.
PDF_curveto: Draw a Bézier curve.
PDF_endpath: Close the current vector.
PDF_end_page: Close the PDF file page.
PDF_execute_image: Place the image in the PDF file to the specified location.
PDF_fill: Fill the current vector.
PDF_fill_stroke: Fill the current vector and draw a line along the vector.
PDF_get_info: Return file information.
PDF_lineto: Draw a straight line.
PDF_moveto: Set the coordinate point for processing.
PDF_open: Create a new PDF file.
PDF_open_gif: Open GIF image file.
PDF_open_jpeg: Open JPEG image file.
PDF_open_memory_image: Open the memory image file.
PDF_place_image: Place the image into the specified location of the PDF file.
PDF_put_image: Place images into PDF files.
PDF_rect: Draw a rectangle.
PDF_restore: Restore environment variables.
PDF_rotate: Rotate objects.
PDF_save: Save environment variables.
PDF_scale: Scale object.
PDF_setdash: Set the dotted line style.
PDF_setflat: 设定平滑值。 
PDF_setgray: 指定绘图的颜色为灰阶并填入。 
PDF_setgray_fill: 指定填入的颜色为灰阶。 
PDF_setgray_stroke: 指定绘图的颜色为灰阶。 
PDF_setlinecap: 设定 linecap 参数。 
PDF_setlinejoin: 设定连线参数。 
PDF_setlinewidth: 设定线宽。 
PDF_setmiterlimit: 设定斜边界限。 
PDF_setrgbcolor: 指定绘图的颜色为彩色并填入。 
PDF_setrgbcolor_fill: 指定填入的颜色为彩色。 
PDF_setrgbcolor_stroke: 指定绘图的颜色为彩色。 
PDF_set_char_spacing: 设定字元间距。 
PDF_set_duration: 设定二页的切换时间。 
PDF_set_font: 设定使用的字型及大小。 
PDF_set_horiz_scaling: 设定文字水平间距。 
PDF_set_info_author: 设定档案作者。 
PDF_set_info_creator: 设定建档者字串。 
PDF_set_info_keywords: 设定档案的关键字。 
PDF_set_info_subject: 设定档案主题。 
PDF_set_info_title: 设定档案标题。 
PDF_set_leading: 设定行距。 
PDF_set_text_matrix: 设定文字矩阵。 
PDF_set_text_pos: 设定文字位置。 
PDF_set_text_rendering: 设定文字表现方式。 
PDF_set_text_rise: 设定文字高度。 
PDF_set_transition: 设定页的转换。 
PDF_set_word_spacing: 设定字间距。 
PDF_show: 输出字串到 PDF 档案。 
PDF_show_xy: 输出字串到指定坐标。 
PDF_stringwidth: 计算字串的宽度。 
PDF_stroke: 沿向量绘线。 
PDF_translate: 移动原点。 
pfsockopen: 打开网路的 Socket 持续连结。 
pg_Close: 关闭 PostgreSQL 伺服器连线。 
pg_cmdTuples: 取得被 SQL 指令影响的资料笔数。 
pg_Connect: 开启 PostgreSQL 伺服器连线。 
pg_DBname: 取得目前的资料库名称。 
pg_ErrorMessage: 传回错误讯息。 
pg_Exec: 执行 query 指令。 
pg_Fetch_Array: 传回阵列资料。 
pg_Fetch_Object: 传回物件资料。 
pg_Fetch_Row: 传回单列的各栏位。 
pg_FieldIsNull: 检查栏位是否有资料。 
pg_FieldName: 传回指定栏位的名称。 
pg_FieldNum: 取得指定栏位的行数。 
pg_FieldPrtLen: 计算可列示的长度。 
pg_FieldSize: 计算指定栏位的长度。 
pg_FieldType: 获得目前栏位的型态。 
pg_FreeResult: 释放传回占用记忆体。 
pg_GetLastOid: 取得最后的物件代码。 
pg_Host: 取得连线机器名称。 
pg_loclose: 关闭大型物件。 
pg_locreate: 建立大型物件。 
pg_loopen: 开启大型物件。 
pg_loread: 读取大型物件。 
pg_loreadall: 读取大型物件并输出。 
pg_lounlink: 删除大型物件。 
pg_lowrite: 读取大型物件。 
pg_NumFields: 取得传回栏位的数目。 
pg_NumRows: 取得传回列的数目。 
pg_Options: 取得连线机器选项。 
pg_pConnect: 开启 PostgreSQL 伺服器长期连线。 
pg_Port: 取得连线机器埠号。 
pg_Result: 取得查询 (query) 的结果。 
pg_tty: 取得连线机器终端机。 
phpinfo: 传回 PHP 所有相关资讯。 
phpversion: 传回 PHP 版本讯息。 
pi: 圆周率。 
popen: 开启档案。 
pos: Returns the current element of the array.
pow: Power.
preg_match: String comparison analysis.
preg_match_all: Overall comparison analysis of strings.
preg_replace: String comparison analysis and replacement.
preg_split: Split the string according to the specified rules.
prev: Move the internal index of the array forward.
print: Output string.
printf: Output formatted string.
putenv: Set system environment variables.
quoted_printable_decode: Convert qp encoded string into 8-bit string.
QuoteMeta: Add quote symbols.
rand: Get random values.
range: Create an array of integer ranges.
rawurldecode: Restore URL special format string to ordinary string.
rawurlencode: Encode the string into a URL-specific format.
readdir: Read directory handle.
readfile: Output file.
readgzfile: Read the compressed file.
readlink: Returns the symbolic link target file.
recode_file: Record the file or file request into the record.
recode_string: Record the string into the record.
register_shutdown_function: Define the function to be executed after the PHP program is executed.
rename: Change the file name.
reset: Point the array pointer to the first element of the array.
rewind: Reset the read and write position indicators of the open file.
rewinddir: Reset directory handle.
rmdir: Delete directory.
round: Rounding up.
rsort: Sort the values ​​of the array from large to small.
sem_acquire: Acquire signal.
sem_get: Get the signal code.
sem_release: Release signal.
serialize: Store data into the system.
session_decode: Session data decoding.
session_destroy: End session.
session_encode: Session data encoding.
session_id: access the current session code.
session_is_registered: Check whether the variable is registered.
session_module_name: Access the current session module.
session_name: Access the current session name.
session_register: Register new variables.
session_save_path: Access the current session path.
session_start: Initial session.
session_unregister: Delete registered variables.
setcookie: Send Cookie information to the browser.
setlocale: Set localized information.
settype: Set the variable type.
set_file_buffer: Set the file buffer size.
set_magic_quotes_runtime: Set magic_quotes_runtime value.
set_socket_blocking: Switch between shelving and no-shelving mode.
set_time_limit: Set the longest execution time of this page.
shm_attach: Enable the creation of shared memory sections.
shm_detach: Detach shared memory section connection.
shm_get_var: Get the variable specified in the memory section.
shm_put_var: Add or update variables in the memory section.
shm_remove: Clear the memory section.
shm_remove_var: Delete the specified variable in the memory section.
shuffle: Shuffle the order of the array.
similar_text: Calculate string similarity.
Sin: Sine calculation.
sizeof: Get the size of the array.
sleep: Pause execution.
snmpget: Get the identification code of the specified object.
snmpwalk: Get all objects.
snmpwalkoid: Get network ontology tree information.
snmp_get_quick_print: Get the quick_print value in the UCD library.
snmp_set_quick_print: Set the quick_print value in the UCD library.
solid_close: Close the solid link.
solid_connect: Connect to solid database.
solid_exec: Execute SQL instructions.
solid_fetchrow: Get and return a column.
solid_fieldname: Get the field name.
solid_fieldnum: Get the number of fields.
solid_freeresult: Release the memory of the returned data.
solid_numfields: Get the number of fields.
solid_numrows: Get the number of columns returned.
solid_result: Get the returned data.
sort: Sort the array.
soundex: Calculate the pronunciation value of a string
split: Split the string according to the specified rules.
sprintf: Format strings.
sql_regcase: Return the string in uppercase and lowercase characters verbatim.
Sqrt: Square root.
srand: Set random seed.
stat: Get file related information.
strchr: Find the first character that appears.
strcmp: String comparison.
strcspn: The length of different strings.
strftime: Format the server's time locally.
StripSlashes: Remove backslash characters.
strip_tags: Remove HTML and PHP tags.
strlen: Get the length of the string.
strpos: Find the first occurrence of a character in a string.
strrchr: Get the string starting from the last occurrence of a certain character.
strrev: Reverse the string.
strrpos: Find the last occurrence of a character in a string.
strspn: Find the number of times a string falls within the mask of another string.
strstr: Returns the string from the beginning to the end of a certain string in the string.
strtok: Cut the string.
strtolower: Convert all strings to lowercase.
strtoupper: Convert all strings to uppercase letters.
strtr: Convert certain characters.
strval: Convert variables into string type.
str_replace: String replacement.
substr: Get part of the string.
sybase_affected_rows: Get the number of columns affected by the last query.
sybase_close: Close the connection to the database.
sybase_connect: Connect to the database.
sybase_data_seek: Moving column indicator.
sybase_fetch_array: Return array data.
sybase_fetch_field: Get field information.
sybase_fetch_object: Return object data.
sybase_fetch_row: Returns each column of a single column.
sybase_field_seek: Set the indicator to a field that returns the value.
sybase_free_result: Release and return the occupied memory.
sybase_num_fields: Get the number of fields returned.
sybase_num_rows: Get the number of columns returned.
sybase_pconnect: Enable long-term connection to the server.
sybase_query: Send a query string.
sybase_result: Get the result of query.
sybase_select_db: Select a database.
symlink: Create a symbolic link.
syslog: Record to system log.
system: Execute external programs and display output data.
Tan: Tangent calculation.
tempnam: Create a unique temporary file.
time: Get the UNIX timestamp of the current time.
touch: Set the last modification time.
trim: Trim the spaces at the beginning and end of the string.
uasort: Sort the array according to user-defined function.
ucfirst: Change the first character of the string to uppercase.
ucwords: Capitalize the first letter of each word in the string.
uksort: Sort the array index according to user-defined function.
umask: Change the current file attribute mask umask.
uniqid: Generate a unique value.
unlink: Delete files.
unpack: Unpack bit string data.
unserialize: Remove system data.
unset: Delete variables.
urldecode: Restore URL encoded string.
urlencode: URL-encode the string.
usleep: Pause execution.
usort: Sort the values ​​of the array according to a user-defined function.
utf8_decode: Convert UTF-8 code to ISO-8859-1 code.
utf8_encode: Convert ISO-8859-1 code to UTF-8 code.
virtual: Complete the sub-request of the Apache server.
vm_addalias: Add new aliases.
vm_adduser: Add new user.
vm_delalias: Delete aliases.
vm_deluser: Delete user.
vm_passwd: Change user password.
wddx_add_vars: Continuousize WDDX packets.
wddx_deserialize: Deserialize WDDX packets.
wddx_packet_end: The end of the WDDX packet.
wddx_packet_start: Start a new WDDX packet.
wddx_serialize_value: Serialize a single value.
wddx_serialize_vars: Continuousize multiple values.
xml_error_string: Get XML error string.
xml_get_current_byte_index: Get the byte number currently parsed.
xml_get_current_column_number: Get the column number currently analyzed.
xml_get_current_line_number: Get the currently parsed line number.
xml_get_error_code: Get XML error code.
xml_parse: Parse XML files.
xml_parser_create: Initial XML parser.
xml_parser_free: Release the memory occupied by parsing.
xml_parser_get_option: Get the options used for parsing.
xml_parser_set_option: Set the options used for parsing.
xml_set_character_data_handler: Create character data header.
xml_set_default_handler: Create a default header.
xml_set_element_handler: Set the header of the element.
xml_set_external_entity_ref_handler: Set the header of the external entity reference.
xml_set_notation_decl_handler: Set the header of the notation declaration.
xml_set_object: Use objects for XML parser.
xml_set_processing_instruction_handler: Create processing instruction header.
xml_set_unparsed_entity_decl_handler: Set the header of unparsed entity declaration.
yp_errno: Get the error code of the previous YP operation.
yp_err_string: Get the error string of the previous YP operation.
yp_first: Returns the first matching data on the map.
yp_get_default_domain: Get the Domain of the machine.
yp_master: Obtain the Master of NIS.
yp_match: Obtain specified information.
yp_next: Specify the next data of map.
yp_order: Returns the ordinal number of map.

PHP function library and functions: Session function library
This function library has a total of 11 functions
session_start: initial session.
session_destroy: End session.
session_name: Access the current session name.
session_module_name: Access the current session module.
session_save_path: Access the current session path.
session_id: access the current session code.
session_register: Register new variables.
session_unregister: Delete registered variables.
session_is_registered: Check whether the variable is registered.
session_decode: Session data decoding.
session_encode: Session data encoding

ODBC database connection library
This library has a total of 25 functions
Open Database Connectivity (ODBC) is a common interface for connecting to databases. ODBC is a database connection standard led by Microsoft, and Microsoft's system is the most mature implementation environment. In UNIX systems, you usually need to use the ODBC interface provided by other vendors. Some UNIX vendors will provide their own ODBC interface (such as SUN provides ODBC for Solaris).
ODBC and database queries use SQL language, which is the same as most database queries, which makes the system easy to communicate with various databases. Of course, through the ODBC interface, the back-end database does not have to be a large database system such as DBMS. It can also be a data table (such as Microsoft Access) or a spreadsheet (such as Microsoft Excel).
odbc_autocommit: Switch the automatic change function.
odbc_binmode: Set the binary data processing method.
odbc_close: Close the ODBC connection.
odbc_close_all: Close all ODBC connections.
odbc_commit: Update the ODBC database.
odbc_connect: Connect to ODBC database.
odbc_cursor: Get the cursor name.
odbc_do: Execute SQL instructions.
odbc_exec: Execute SQL instructions.
odbc_execute: Execute preset SQL instructions.
odbc_fetch_into: Get the specified column returned.
odbc_fetch_row: Get and return a column.
odbc_field_name: Get the field name.
odbc_field_type: Get the field data form.
odbc_field_len: Get the field data length.
odbc_free_result: Release the memory of the returned data.
odbc_longreadlen: Set the maximum value of the returned column.
odbc_num_fields: Get the number of fields.
odbc_pconnect: Long-term connection to ODBC database.
odbc_prepare: Preset SQL instructions.
odbc_num_rows: Get the number of returned columns.
odbc_result: Get the returned data.
odbc_result_all: Returns HTML table data.
odbc_rollback: Undo the current transaction.
odbc_setoption: Adjust ODBC settings