What are the php character conversion functions?

php character conversion functions include: 1. addcslashes function; 2. addslashes function; 3. bin2hex function; 4. fprintf function; 5. hebrev function; 6. hex2bin function, etc.

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php character conversion functions are:

addcslashes — Use backslashes to escape characters in a string in C style

addslashes — Use backslashes to quote strings

bin2hex — Function that converts a string containing data Convert a binary string to a hexadecimal value

chop — Alias ​​for rtrim

chr — Return the specified character

chunk_split — Split a string into small chunks

convert_cyr_string — Convert characters from one Cyrillic character to another

convert_uudecode — Decode a uuencode-encoded string

convert_uuencode — Use uuencode to encode a string

count_chars — Returns information about the characters used in a string

crc32 — Computes the crc32 polynomial of a string

crypt — One-way string hashing

echo — Output One or more strings

explode — Use one string to split another string

fprintf — Write the formatted string to the stream

get_html_translation_table — Returns the conversion table using htmlspecialchars and htmlentities

hebrev — Convert logical-Hebrew to visual-Hebrew

hebrevc — Convert logical-Hebrew to visual-Hebrew and convert newlines

hex2bin — Convert hexadecimal string to binary string

html_entity_decode — Convert HTML entities to their corresponding characters

htmlentities — Convert characters to HTML escaped characters

htmlspecialchars_decode — Convert special HTML entities back to normal characters

htmlspecialchars — Convert special characters to HTML entities

implode — Convert a one-dimensional array of values ​​into a string

join — Alias ​​implode

lcfirst — Make The first character of a string is lowercase

levenshtein — Calculate the edit distance between two strings

localeconv — Get numeric formatting information

ltrim — Delete a string Leading whitespace characters (or other characters)

md5_file — Calculate the MD5 hash value of the specified file

md5 — Calculate the MD5 hash value of a string

metaphone — Calculate the metaphone key of a string

money_format — Format a number into a currency string

nl_langinfo — Query language and locale information

nl2br — Insert before all new lines in the string HTML line break tag

number_format — Format a number with thousand separators

ord — Convert the first byte of a string to a value between 0-255

parse_str — Parse a string into multiple variables

print — Output a string

printf — Output a formatted string

quoted_printable_decode — Convert a quoted-printable string For 8-bit strings

quoted_printable_encode — Convert an 8-bit string to a quoted-printable string

quotemeta — Escape metacharacter set

rtrim — Remove characters White space characters (or other characters) at the end of the string

setlocale — Set locale information

sha1_file — Calculate the sha1 hash value of the file

sha1 — Calculate the sha1 hash value of the string Column value

similar_text — Calculate the similarity of two strings

soundex — Calculate the soundex key of a string

sprintf — Return a formatted string

sscanf — Parse input characters according to the specified format

str_getcsv — Parse a CSV string into an array

str_ireplace — A case-ignoring version of str_replace

str_pad — Use another String padding string to the specified length

str_repeat — Repeat a string

str_replace — Substring replacement

str_rot13 — Perform ROT13 conversion on a string

str_shuffle — Randomly shuffle a string

str_split — Convert a string into an array

str_word_count — Return the usage of words in a string

strcasecmp — Binary safe Compare strings (case-insensitive)

strchr — alias strstr

strcmp — Binary-safe string comparison

strcoll — Locale-based string comparison

strcspn — Get the length of the starting substring of a non-matching mask

strip_tags — Strip HTML and PHP tags from a string

stripcslashes — Dequote an escape using addcslashes Strings

stripos — Find the first occurrence of a string (case-insensitive)

stripslashes — Backquote a quoted string

stristr — Ignore the strstr function Uppercase and lowercase versions

strlen — Gets the length of a string

strnatcasecmp — Compares strings using the “natural order” algorithm (case-insensitive)

strnatcmp — Uses the natural ordering algorithm Compare strings

strncasecmp — Binary safe comparison of several characters at the beginning of a string (case-insensitive)

strncmp — Binary safe comparison of several characters at the beginning of a string

strpbrk — In a string Find any character in a set of characters

strpos — Find the first occurrence of a string

strrchr — Find the last occurrence of a specified character in a string

strrev — Reverse a string

strripos — Calculate the position of the last occurrence of the specified string in the target string (case-insensitive)

strrpos — Calculate the position of the specified string in the target string Position of the last occurrence

strspn — Calculate the length of the first substring in the string in which all characters exist in the specified character set.

strstr — Find the first occurrence of a string

strtok — Mark split string

strtolower — Convert a string to lowercase

strtoupper — Convert a character Convert string to uppercase

strtr — Convert the specified character

substr_compare — Binary safe comparison of strings (compare specified length from offset position)

substr_count — Count occurrences of a string Times

substr_replace — Replace the substring of the string

substr — Return the substring of the string

trim — Remove the blank characters (or other characters) at the beginning and end of the string

ucfirst — Converts the first letter of a string to uppercase

ucwords — Converts the first letter of each word in a string to uppercase

vfprintf — Converts formatting characters String writing stream

vprintf — Output a formatted string

vsprintf — Return a formatted string

wordwrap — Break the string into a specified number of words

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