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PHP5中文手册

mb_strstr

(PHP 5 >= 5.2.0)

mb_strstr — Finds first occurrence of a string within another

说明

string mb_strstr ( string $haystack , string $needle [, bool $part [, 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

part

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 . If set to FALSE, it returns all of haystack from the first occurrence of needle to the end, Default value is FALSE.

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.