PHP strstr() Function: Usage, Parameters, Return Value, and Examples
The PHP strstr() function searches for the first occurrence of a needle in a haystack string and returns either the remainder of the haystack or, optionally, the portion before the needle, with detailed parameter descriptions and example code illustrating its use.
strstr() is a PHP function that searches a string for the first occurrence of a needle and returns the portion of the haystack from that point to the end (or optionally the part before the needle).
Parameters
haystack – the input string to search.
needle – the string to look for; if not a string it is converted to an integer and used as a character position.
before_needle – optional boolean; when true the function returns the part of haystack before the needle.
Return value
Returns the resulting substring on success, or FALSE if the needle is not found.
Example
<?php
$email = '[email protected]';
$domain = strstr($email, '@');
echo $domain; // prints @example.com
$user = strstr($email, '@', true);
echo $user; // prints name
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