查找最后一个指定字符函数（strrchr）

strrchr

(PHP 3, PHP 4 )

strrchr --  Find the last occurrence of a character in a string

Description

string strrchr ( string haystack, char needle)

This function returns the portion of haystack which starts at the last occurrence of needle and goes until the end of haystack.

Returns FALSE if needle is not found.

If needle contains more than one character, only the first is used. This behavior is different from that of strchr().

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

例子 1. strrchr() example

<?php
// get last directory in $PATH
$dir = substr(strrchr($PATH, ":"), 1);

// get everything after last newline
$text = "Line 1\nLine 2\nLine 3";
$last = substr(strrchr($text, 10), 1 );
?>