PHP5中文手册·Find first occurrence of a string -- 追寻梦想＞编程乐园＞PHP 编程

说明

string strstr ( string $haystack , string $needle , bool $before_needle )

Returns part of haystack string from 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 needle occurs within haystack , use the faster and less memory intensive function strpos() instead.

参数

haystack: The input string.
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 is FALSE), strstr() returns the part of the haystack before the first occurence of the needle .

返回值

Returns the portion of string, or FALSE if needle is not found.

更新日志

版本	说明
6.0.0	Added the `before_needle` parameter.
4.3.0	strstr() was made binary safe.

范例

Example#1 strstr() example


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

$user = strstr($email, '@', true);
echo $user; // prints name
?>

strstr

说明

参数

返回值

更新日志

范例

参见