Sort array

[everisk]

I have an array that looks like below. I'd like to sort it in by [ctor] in descending order. Help please~. Thanks.

 

Array
(
    [1] => Array
        (
            [url] => www.abc.com
            [stimes] => 154
            [ctor] => 19.06
        )

    [2] => Array
        (
            [url] => www.123.com
            [stimes] => 90
            [ctor] => 11.14
        )

    [3] => Array
        (
            [url] => www.xyz.com
            [stimes] => 180
            [ctor] => 22.28
        )

)

[teng84]

there is no predefined function for this you have use recursive function to sort this king of array!

[Jessica]

http://php.net/usort

[everisk]

Thank you for all your responses. The thing is i'm quite an amateur in PHP so I dont know how to write my own function to sort the array  :'( . If anyone can help, I'd greatly appreciate it. 

[Barand]

<?php
function mysort($a, $b)
{
   return $a['ctor'] - $b['ctor'];
}

usort ($myarray, 'mysort');

[everisk]

thank you. but that doesn't seem to work

[Barand]

it gave me

Array
(
    [0] => Array
        (
            [url] => www.123.com
            [stimes] => 90
            [ctor] => 11.14
        )

    [1] => Array
        (
            [url] => www.abc.com
            [stimes] => 154
            [ctor] => 19.06
        )

    [2] => Array
        (
            [url] => www.xyz.com
            [stimes] => 180
            [ctor] => 22.28
        )

)

 

which looks sorted to me.

 

Define "doesn't work"

[Barand]

Just re-read first post. To get DESC sort you need to reverse the sign of the value returned by the function

 

function mysort($a, $b)
{
   return $b['ctor'] - $a['ctor'];          // B-A for descending
}

usort ($myarray, 'mysort');              // use uasort() if you want to preserve array indexes

[everisk]

Oh right. Sorry.. I made some mistakes. Look like it's working now. Thanks a lot, Barand!