php array key sorting with strings & numbers

Question

<?php
$rate=array ( "M100B1000" => "40.00", "M1000B20000" => "80.00", "M500B10000" => "50.00", "MUnlimitedBUnlimited" => "240.00", "M5000BUnlimited" => "120.00 ") ;
ksort($rate);
print_r($rate);
?>

It gives sorting rate array..

M1000B20000
M100B1000
M5000BUnlimited
M500B10000
MUnlimitedBUnlimited

I Need this sorting..

M100B1000
M500B10000
M1000B20000
M5000BUnlimited
MUnlimitedBUnlimited

Give some ideas...

do you want it sorted by length of the string or the numeric value inside it? — Anirudh
– Anirudh, Commented Apr 27, 2012 at 5:38
the sort does not take numbers into account, this is just a simple A-Z string sort comparisson, so M100B is not going to be before M1000B (extra 0). You will have to manually sort / reg expression this. — Jakub
– Jakub, Commented Apr 27, 2012 at 5:39

COLD TOLD · Accepted Answer · 2012-04-27 05:35:26Z

1

it looks like you want to sort it based on the size of the string if yes take a look at this example

more explanation here http://php.net/manual/en/function.sort.php

 function shortestFirst(key($str1), key($str2)) {

        return strlen(key($str1)) - strlen(key($str2));

     }
    $rate=array ( "M100B1000" => "40.00", "M1000B20000" => "80.00", "M500B10000" => "50.00", "MUnlimitedBUnlimited" => "240.00", "M5000BUnlimited" => "120.00 "); 


    uasort($data, 'shortestFirst');
        print_r($data);
        echo '</pre>';

answered Apr 27, 2012 at 5:35

COLD TOLD

13.6k3 gold badges37 silver badges53 bronze badges

M100B1000, M500B10000, M1000B20000,MUnlimitedBUnlimited M5000BUnlimited, last is change

Vaishu
– Vaishu

04/27/2012 05:37:38
Commented Apr 27, 2012 at 5:37

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