(PHP 4, PHP 5, PHP 7)
strstr — Find the first occurrence of a string
strstr ( string $haystack , string $needle [, bool $before_needle = false ] ) : string|false
Returns part of
haystack string starting from and including the first occurrence of
needle to the end of
This function is case-sensitive. For case-insensitive searches, use stristr().
If you only want to determine if a particular
haystack, use the faster and less memory intensive function strpos() instead.
The input string.
Prior to PHP 8.0.0, if
needle is not a string, it is converted to an integer and applied as the ordinal value of a character. This behavior is deprecated as of PHP 7.3.0, and relying on it is highly discouraged. Depending on the intended behavior, the
needle should either be explicitly cast to string, or an explicit call to chr() should be performed.
true, strstr() returns the part of the
haystack before the first occurrence of the
needle (excluding the needle).
Returns the portion of string, or
needle is not found.
|8.0.0|| Passing an int as |
|7.3.0|| Passing an int as |
Example #1 strstr() example
<?php $email = '[email protected]'; $domain = strstr($email, '@'); echo $domain; // prints @example.com $user = strstr($email, '@', true); // As of PHP 5.3.0 echo $user; // prints name ?>
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