String Handling Functions

PHP String Handling Functions

Function Action

chr Returns the character corresponding to an ASCII code.

crypt One way encoding of a string (called hashing).

explode
Converts a character delimited string into an array
like the VB Split function.

implode Converts an array into a character delimited string.

ltrim
Remove characters (default is remove blanks) from the
beginning of a string.

ord Return the ASCII code of a character.

parse_str Extract the variables from a query string passed via a URL.

print Display a string. Always return 1.

printf
Display a formatted string. Returns the length of the
formatted string.

rtrim
Remove characters (default is remove blanks) from the end
of a string.

sprintf Return a formatted string.

str_replace
str_ireplace Replace all occurrences of a substring within a string.
&nsp;

str_split
Split a string into an array equal length chunks (default
length 1).

strcmp Binary-safe string comparison.

strlen Returns the length of a string.

strpos
stripos Returns the position of first occurrence of a substring
in a string.

strrev Returns a string with characters reversed.

strtolower Returns a string with all characters converted to lowercase.

strtoupper Returns a string with all characters converted to uppercase.

substr Extracts a substring from a string.

trim Remove characters (default is remove blanks) from the
beginning and end of a string.

Function	Action
chr	Returns the character corresponding to an ASCII code.
crypt	One way encoding of a string (called hashing).
explode	Converts a character delimited string into an array like the VB Split function.
implode	Converts an array into a character delimited string.
ltrim	Remove characters (default is remove blanks) from the beginning of a string.
ord	Return the ASCII code of a character.
parse_str	Extract the variables from a query string passed via a URL.
print	Display a string. Always return 1.
printf	Display a formatted string. Returns the length of the formatted string.
rtrim	Remove characters (default is remove blanks) from the end of a string.
sprintf	Return a formatted string.
str_replace str_ireplace	Replace all occurrences of a substring within a string. &nsp;
str_split	Split a string into an array equal length chunks (default length 1).
strcmp	Binary-safe string comparison.
strlen	Returns the length of a string.
strpos stripos	Returns the position of first occurrence of a substring in a string.
strrev	Returns a string with characters reversed.
strtolower	Returns a string with all characters converted to lowercase.
strtoupper	Returns a string with all characters converted to uppercase.
substr	Extracts a substring from a string.
trim	Remove characters (default is remove blanks) from the beginning and end of a string.

Use this online reference as a manual for all documented PHP functions:
http://www.php.net/quickref.php