PHP Manual: String Functions

addcslashes — Quote string with slashes in a C style

addslashes — Quote string with slashes

bin2hex — Convert binary data into hexadecimal representation

chop — Alias of rtrim

chr — Return a specific character

chunk_split — Split a string into smaller chunks

convert_cyr_string — Convert from one Cyrillic character set to another

convert_uudecode — Decode a uuencoded string

convert_uuencode — Uuencode a string

count_chars — Return information about characters used in a string

crc32 — Calculates the crc32 polynomial of a string

crypt — One-way string hashing

echo — Output one or more strings

explode — Split a string by string

fprintf — Write a formatted string to a stream

get_html_translation_table — Returns the translation table used by htmlspecialchars and htmlentities

hebrev — Convert logical Hebrew text to visual text

hebrevc — Convert logical Hebrew text to visual text with newline conversion

hex2bin — Decodes a hexadecimally encoded binary string

html_entity_decode — Convert all HTML entities to their applicable characters

htmlentities — Convert all applicable characters to HTML entities

htmlspecialchars_decode — Convert special HTML entities back to characters

htmlspecialchars — Convert special characters to HTML entities

implode — Join array elements with a string

join — Alias of implode

lcfirst — Make a string's first character lowercase

levenshtein — Calculate Levenshtein distance between two strings

localeconv — Get numeric formatting information

ltrim — Strip whitespace (or other characters) from the beginning of a string

md5_file — Calculates the md5 hash of a given file

md5 — Calculate the md5 hash of a string

metaphone — Calculate the metaphone key of a string

money_format — Formats a number as a currency string

nl_langinfo — Query language and locale information

nl2br — Inserts HTML line breaks before all newlines in a string

number_format — Format a number with grouped thousands

ord — Return ASCII value of character

parse_str — Parses the string into variables

print — Output a string

printf — Output a formatted string

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

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

quotemeta — Quote meta characters

rtrim — Strip whitespace (or other characters) from the end of a string

setlocale — Set locale information

sha1_file — Calculate the sha1 hash of a file

sha1 — Calculate the sha1 hash of a string

similar_text — Calculate the similarity between two strings

soundex — Calculate the soundex key of a string

sprintf — Return a formatted string

sscanf — Parses input from a string according to a format

str_getcsv — Parse a CSV string into an array

str_ireplace — Case-insensitive version of str_replace.

str_pad — Pad a string to a certain length with another string

str_repeat — Repeat a string

str_replace — Replace all occurrences of the search string with the replacement string

str_rot13 — Perform the rot13 transform on a string

str_shuffle — Randomly shuffles a string

str_split — Convert a string to an array

str_word_count — Return information about words used in a string

strcasecmp — Binary safe case-insensitive string comparison

strchr — Alias of strstr

strcmp — Binary safe string comparison

strcoll — Locale based string comparison

strcspn — Find length of initial segment not matching mask

strip_tags — Strip HTML and PHP tags from a string

stripcslashes — Un-quote string quoted with addcslashes

stripos — Find the position of the first occurrence of a case-insensitive substring in a string

stripslashes — Un-quotes a quoted string

stristr — Case-insensitive strstr

strlen — Get string length

strnatcasecmp — Case insensitive string comparisons using a "natural order" algorithm

strnatcmp — String comparisons using a "natural order" algorithm

strncasecmp — Binary safe case-insensitive string comparison of the first n characters

strncmp — Binary safe string comparison of the first n characters

strpbrk — Search a string for any of a set of characters

strpos — Find the position of the first occurrence of a substring in a string

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

strrev — Reverse a string

strripos — Find the position of the last occurrence of a case-insensitive substring in a string

strrpos — Find the position of the last occurrence of a substring in a string

strspn — Finds the length of the initial segment of a string consisting entirely of characters contained within a given mask.

strstr — Find the first occurrence of a string

strtok — Tokenize string

strtolower — Make a string lowercase

strtoupper — Make a string uppercase

strtr — Translate characters or replace substrings

substr_compare — Binary safe comparison of two strings from an offset, up to length characters

substr_count — Count the number of substring occurrences

substr_replace — Replace text within a portion of a string

substr — Return part of a string

trim — Strip whitespace (or other characters) from the beginning and end of a string

ucfirst — Make a string's first character uppercase

ucwords — Uppercase the first character of each word in a string

vfprintf — Write a formatted string to a stream

vprintf — Output a formatted string

vsprintf — Return a formatted string

wordwrap — Wraps a string to a given number of characters

String Functions

See Also