strpos function in reverse in php

Question

strpos function in reverse

I would like to find a method where i can find a character position in reverse.For example last "e" starting count in reverse.

From example

$string="Kelley";
$strposition = strpos($string, 'e');

it will give me position 1.

Dichroite

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I had the same problem, I googled, came here, found answer, happy – Lydgate

Answer 1

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

Find the numeric position of the last occurrence of needle in the haystack string.

http://php.net/manual/en/function.strrpos.php

Farmyard

Answer 2

What you need is strrpos to find the position of the last occurrence of a substring in a string

$string = "Kelley";
$strposition = strrpos($string, 'e');
var_dump($strposition);

Liggitt

Answer 3

strripos and strrpos add $needle length to result, eg.:

<?php
$haystack = '/test/index.php';
$needle   = 'index.php';

echo strrpos($haystack, $needle);//output: 6

An alternative is use strrev for retrieve position from the end, eg:

<?php
$haystack = 'Kelley';
$needle   = 'e';

echo strpos(strrev($haystack), strrev($needle));//Output: 1

Smack

I think this is closer to the answer that they were looking for. The only difference would be to get the actual position in the original string, you would need to subtract the found position from the length of the original string. In the provided example the "e" just happens to be in the same position from the start as the beginning. – Cannonade

Answer 4

Try this:

strrpos()

Hope that helps.

Edita

Answer 5

Simply as can be: strrpos()

This will return the first occurence of the character from the right.

Optimism

Answer 6

function rev ($string, $char)
{
    if (false !== strrpos ($string, $char))
    {
        return strlen ($string) - strrpos ($string, $char) - 1;
    }
}

echo rev ("Kelley", "e");

Macaw

Answer 7

Simple function , you can add:

    function stripos_rev($hay,$ned){
    $hay_rev = strrev($hay);
    $len = strlen($hay);
    if( (stripos($hay_rev,$ned)) === false ){
        return false;
    } else {
        $pos = intval(stripos($hay_rev,$ned));
        $pos = $len - $pos;
    }
    return $pos;

}

Lifeblood

Answer 8

The only solution that works is this function:

function strpos_reverse ($string, $search, $offset){
    return strrpos(substr($string, 0, $offset), $search);
}

Borax