PHP 手册
后退前进

strstr

(PHP 3, PHP 4, PHP 5)

strstr -- Find first occurrence of a string

Description

string strstr ( string haystack, string needle )

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

If needle is not found, returns FALSE.

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

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

例子 1. strstr() example

<?php
$email = '[email protected]';
$domain = strstr($email, '@');
echo $domain; // prints @example.com
?>

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

strstr() has been binary safe since PHP 4.3.0

See also ereg(), preg_match(), stristr(), strpos(), strrchr(), and substr().

后退起点前进
strspn上一级strtok