strstr
(PHP 4, PHP 5)
strstr — Find the first occurrence of a string
Description
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
needleoccurs withinhaystack, use the faster and less memory intensive function strpos() instead.
Parameters
-
haystack -
The input string.
-
needle -
If
needleis 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 thehaystackbefore the first occurrence of theneedle(excluding the needle).
Return Values
Returns the portion of string, or FALSE if needle
is not found.
Changelog
| Version | Description |
|---|---|
| 5.3.0 |
Added the optional parameter before_needle.
|
| 4.3.0 | strstr() was made binary safe. |
Examples
Example #1 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
?>
See Also
- stristr() - Case-insensitive strstr
- strrchr() - Find the last occurrence of a character in a string
- strpos() - Find the position of the first occurrence of a substring in a string
- strpbrk() - Search a string for any of a set of characters
- preg_match() - Perform a regular expression match
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