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stristr
Case-insensitive strstr
(PHP 4, PHP 5)
string stristr ( string haystack, string needle, bool before_needle )
Parameters
- haystack
- 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(the default isFALSE), stristr() returns the part of the haystack before the first occurence of the needle.
needle and haystack are examined in a case-insensitive manner.
ChangeLog
| Version | Description |
|---|---|
| 6.0.0 | Added the before_needle parameter. |
| 4.3.0 | stristr() was made binary safe. |
Examples
Example 2456. stristr() example
<?php
$email = 'USER@EXAMPLE.com';
echo stristr($email, 'e'); // outputs ER@EXAMPLE.com
echo stristr($email, 'e', true); // outputs US
?>
Example 2457. Testing if a string is found or not
<?php
$string = 'Hello World!';
if(stristr($string, 'earth') === FALSE) {
echo '"earth" not found in string';
}
// outputs: "earth" not found in string
?>
Example 2458. Using a non "string" needle
<?php
$string = 'APPLE';
echo stristr($string, 97); // 97 = lowercase a
// outputs: APPLE
?>