mb_strripos

(PHP 5 >= 5.2.0, PHP 7)

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

설명

int mb_strripos ( string $haystack , string $needle [, int $offset = 0 [, string $encoding = mb_internal_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.

인수

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.

반환값

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

참고

strripos() - 문자열에서 대소문자 구분 없이 문자열의 마지막 위치를 찾습니다
strrpos() - 문자열에서 마지막 문자의 위치를 찾습니다
mb_strrpos() - Find position of last occurrence of a string in a string

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User Contributed Notes 2 notes

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easai ¶

14 years ago


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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-1

ivrokrambler at gmail dot com ¶

7 years ago


<?php
function backStrpos($str, $needle, $offset){
    $needler = backStr($needle);
    $strr = backStr($str);
    $offsetr = strlen($str) - 1 - $offset;
    $posr = mb_stripos($strr, $needler, $offsetr);
    return strlen($str) - 1 - $posr - strlen($needle);
}
function backStr($str){
    $str = str_replace(array('<', '>'), array('>', '<'), $str);
    return strrev($str);
}

function backStrpos($str, $needle, $offset){
    $needler = backStr($needle);
    $strr = backStr($str);
    $offsetr = strlen($str) - 1 - $offset;
    $posr = mb_stripos($strr, $needler, $offsetr);
    return strlen($str) - 1 - $posr - strlen($needle);
}
function backStr($str){
    $str = str_replace(array('<', '>'), array('>', '<'), $str);
    return strrev($str);
}

$test = '<table><TR>TEXT</TR><TR>TEST</TR></table>';
$pos = mb_stripos($test, 'TEST', 0);
var_dump($pos);
var_dump(backStrpos($test, '<tr', $pos));
var_dump(backStrpos($test, '<tr', backStrpos($test, '<tr', $pos)));

------->
int(24)
int(19)
int(6)

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