What are the string functions in php?
php string functions:
addcslashes — Escape characters in a string using backslashes in C style
addslashes — Use backslashes to quote strings
bin2hex — Function converts a binary string containing data to a hexadecimal value
chop — Alias for rtrim
chr — Returns the specified character
chunk_split — Split a string into small chunks
convert_cyr_string — Convert a character from one Cyrillic character to another
convert_uudecode — Decode a uuencode Encoded string
convert_uuencode — Encode a string using uuencode
count_chars — Return information about the characters used in the string
crc32 — Calculate 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 — Return the translation table using htmlspecialchars and htmlentities
hebrev — Convert logical-Hebrew Convert to visual-Hebrew
hebrevc — Convert logical-Hebrew to visual-Hebrew, and convert newlines Symbol
hex2bin — Convert hexadecimal string to binary string
html_entity_decode — Convert HTML entities to their corresponding characters
htmlentities — Convert characters to HTML escaping Characters
htmlspecialchars_decode — Convert special HTML entities back to normal characters
htmlspecialchars — Convert special characters to HTML entities
implode — Convert the value of a one-dimensional array to string
join — alias implode
lcfirst — Make the first character of a string lowercase
levenshtein — Calculate the edit distance between two strings
localeconv — Get numeric formatting information
ltrim — Remove blank characters (or other characters) at the beginning of a string
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 an HTML line break before all new lines in a string
number_format — Format a number with thousands separators
ord — Convert the first byte of the string to a value between 0-255
parse_str — Parse the string into multiple variables
print — Output the string
printf — Output formatted string
quoted_printable_decode — Convert quoted-printable string to 8-bit string
quoted_printable_encode — Convert 8-bit string to quoted-printable string
quotemeta — Escape metacharacter set
rtrim — Remove blank characters (or other characters) at the end of the string
setlocale — Set locale information
sha1_file — Calculate the sha1 hash value of a file
sha1 — Calculate the sha1 hash value of a string
similar_text — Calculate the similarity of two strings
soundex — Calculate the soundex key of a string
sprintf — Return a formatted string
sscanf — Parse the input characters according to the specified format
str_getcsv — Parse the CSV string into an array
str_ireplace — A case-ignoring version of str_replace
str_pad — Pad a string to a specified length with another string
str_repeat — Repeat a string
str_replace — Sub String replacement
str_rot13 — Perform ROT13 transformation on a string
str_shuffle — Randomly shuffle a string
str_split — Convert a string to an array
str_word_count — Returns the usage of words in a string
strcasecmp — Binary-safe comparison of 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 — From a string Strip HTML and PHP tags from
stripcslashes — Dequote a string escaped using addcslashes
stripos — Find the first occurrence of a string (case-insensitive)
stripslashes — Dequote a quoted string
stristr — A case-ignoring version of the strstr function
strlen — Get the length of a string
strnatcasecmp — Use the “natural order” algorithm Compare strings (case-insensitive)
strnatcmp — Compare strings using the natural ordering algorithm
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 — Find any character in a set of characters in a string
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 last occurrence of the specified string in the target string
strspn — Calculate the length of the first substring in a 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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