mb_strripos

(PHP 5 >= 5.2.0)

mb_strripos — Finds position of last occurrence of a string within another, case insensitive

说明

int mb_strripos ( string $haystack , string $needle [, int $offset = 0 [, string $encoding ]] )

mb_strripos() performs multi-byte safe strripos() operation based on number of characters. needle position is counted from the beginning of haystack. First character's position is 0. Second character position is 1. Unlike mb_strrpos(), mb_strripos() is case-insensitive.

参数

haystack: The string from which to get the position of the last occurrence of needle
needle: The string to find in haystack
offset: The position in haystack to start searching
encoding: Character encoding name to use. If it is omitted, internal character encoding is used.

返回值

Return the numeric position of the last occurrence of needle in the haystack string, or FALSE if needle is not found.

参见

strripos() - 计算指定字符串在目标字符串中最后一次出现的位置（不区分大小写）
strrpos() - 计算指定字符串在目标字符串中最后一次出现的位置
mb_strrpos() - Find position of last occurrence of a string in a string

add a note User Contributed Notes mb_strripos

easai 27-May-2010 03:53


Here are Java like startsWith/endsWith implementations in PHP.





<?php


    function startsWith($haystack,$needle)


    {


      $res=FALSE;


      if(mb_strripos($haystack,$needle,0,"utf-8")==0)


         $res= TRUE;


      return $res;


    }





    function endsWith($haystack,$needle)


    {


      $res=FALSE;


      $len=mb_strlen($haystack);


      $pos=$len-mb_strlen($needle);


      if(mb_strripos($haystack,$needle,0,"utf-8")==$pos)


         $res= TRUE;


      return $res;


    }


?>

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