strstr

(PHP 4, PHP 5, PHP 7)

Find the first occurrence of a string

string strstr ( string $haystack, mixed $needle [, bool $before_needle = false ] )

Returns part of haystack string starting from and including the first occurrence of needle to the end of haystack.

Note:

This function is case-sensitive. For case-insensitive searches, use stristr().

Note:

If you only want to determine if a particular needle occurs within haystack, use the faster and less memory intensive function strpos() instead.

Parameters:

haystack

The input string.

needle

If needle is not a string, it is converted to an integer and applied as the ordinal value of a character.

before_needle

If TRUE, strstr() returns the part of the haystack before the first occurrence of the needle (excluding the needle).

Returns:

Returns the portion of string, or FALSE if needle is not found.

Changelog:

5.3.0

Added the optional parameter before_needle.

4.3.0

strstr()

Examples:

strstr() example

<?php
$email  = 'name@example.com';
$domain = strstr($email, '@');
echo $domain; // prints @example.com
 
$user = strstr($email, '@', true); // As of PHP 5.3.0
echo $user; // prints name
?>