Multibyte String 函数
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mb_strstr

(PHP 5 >= 5.2.0)

mb_strstrFinds first occurrence of a string within another

说明

string mb_strstr ( string $haystack , string $needle [, bool $before_needle = false [, string $encoding ]] )

mb_strstr() finds the first occurrence of needle in haystack and returns the portion of haystack. If needle is not found, it returns FALSE.

参数

haystack

The string from which to get the first occurrence of needle

needle

The string to find in haystack

before_needle

Determines which portion of haystack this function returns. If set to TRUE, it returns all of haystack from the beginning to the first occurrence of needle (excluding needle). If set to FALSE, it returns all of haystack from the first occurrence of needle to the end (including needle).

encoding

Character encoding name to use. If it is omitted, internal character encoding is used.

返回值

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

参见


Multibyte String 函数
在线手册:中文 英文
PHP手册
PHP手册 - N: Finds first occurrence of a string within another

用户评论:

John from http://fullof.bs/ (16-Jul-2009 05:49)

To clarify, if $part is true, the string returned is from index zero up to, but not including, the first character of the matched substring.

<?php echo mb_strstr('abCDef','CD', true); // prints 'ab' ?>