PHP function strrchr() to find the last occurrence of a string in another string

Example

Search for the position of "world" in string and return all characters from that position to the end of the string:

<?php
echo strrchr("Hello world!","world");
?>

Definition and Usage

strrchr() function finds the last occurrence of a string in another string and returns all characters from that position to the end of the string.

Note: This function is binary safe.

Syntax

strrchr(string,char)

Parameters	Description
string	Required. Specifies the string to be searched for.
char	Required. Specifies the characters to search for. If the argument is a number, then searches for characters matching the numeric ASCII value.

Technical details

In PHP 4.3, this function became binary safe.

更多实例

实例 1

搜索 "" 在字符串中的位置，并返回从该位置到字符串结尾的所有字符：

<?php
echo strrchr("Hello world! What a beautiful day!",What);
?>

实例 2

通过 "o" 的 ASCII 值搜索 "o" 在字符串中的位置，并返回从该位置到字符串结尾的所有字符：

<?php
echo strrchr("Hello world!",111);
?>

string strrchr ( string $haystack , mixed $needle )

该函数返回 haystack 字符串中的一部分，这部分以 needle 的最后出现位置开始，直到 haystack 末尾。

<?php
$str = "这四个函数是字符操作函数,主要是判断字符出现的次数,有需要的朋友可以参考一下";
$res = strrchr($str,&#39;主要&#39;);
echo $res;
echo "<br />";
$urlcode1 = urlencode("主");
$urlcode2 = urlencode("一");
echo "主的urlencode:".$urlcode1;
echo "<br />";
echo "一的urlencode:".$urlcode2;
echo "<br />";

echo "下的urlencode:".urlencode("下");

输出：

下
主的urlencode:%E4%B8%BB
一的urlencode:%E4%B8%80
下的urlencode:%E4%B8%8B
strrchr在中文比较的是将中文转化为urlencode后的第一个字符，只要相同就输出它到末尾的内容。。

因为：在主 和 下的  第一个字符，都是 %E4,那么他们相等，输出后面的内容

Return value:	Returns a string from a certain string in another All characters from the last occurrence of the string to the end of the main string. If the character is not found, returns FALSE.
PHP Version:	4+
##Update Log :

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