PHP string functions

Function Description
addcslashes() Quote string with slashes in 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 character used in a string
crc32() Calculate 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 whitespaces( or other characters) from the beginning of a string
md5_file() Calculate the md5 hash of a given file
md5() Calculate the md5 hash of a string
metaphone() Calculate the metaphone key of a string
nl_langinfo() Query language and locale information
nl2br() Insert 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 whitespaces( or other characters) form the end of a string
setlocale() Set locale information
sha1_file() Calculate the sha1 hash of a file
sha1() Calculate the sha1 hash of string
similar_text() Calculate the similarity between two stings
soundex() Calculate the soundex key of a string
sprint() Return a formatted string
sscanf() Parse 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 no matching mask
strip_tags() Strip HTML and PHP tags from a string
stripcslahes() Un-quote string quoted with addclashes
stripos() Find the position of the first occurrence of 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 ?natural order? algorithm
strnatcmp() String comparisons using ?natural order? algorithm
strcasecmp() 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 set of characters
strops() Find the position of the first occurrences 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 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 whitespaces ( 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 charachters

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