Getting the sum off an array
<p>Hi everyone i am looking to get a sum out off array elements. out of the following array.
I want the final sum off size key added up.</p>

<pre><code>    Array
(
    [105 - Screama &amp; Merkury - Kiss Me (Ft. Farah).mp3] =&gt; Array
        (
            [name] =&gt; 105 - Screama &amp; Merkury - Kiss Me (Ft. Farah).mp3
            [time] =&gt; 1309246242
            [size] =&gt; 5912295
            [hash] =&gt; ae6c5dda2b75a4fcbd9f36394f744717
        )

    [106 - The Fives - It's What You Do (Ft. Vanya Taylor).mp3] =&gt; Array
        (
            [name] =&gt; 106 - The Fives - It's What You Do (Ft. Vanya Taylor).mp3
            [time] =&gt; 1309246243
            [size] =&gt; 6361223
            [hash] =&gt; 8898827f715e88c7c667bcbc716086f6
        )

    [107 - Crazy Cousinz - Funky Anthem (Ft. MC Versatile).mp3] =&gt; Array
        (
            [name] =&gt; 107 - Crazy Cousinz - Funky Anthem (Ft. MC Versatile).mp3
            [time] =&gt; 1309246243
            [size] =&gt; 4841021
            [hash] =&gt; dce7d5d3b781625f3e74eab58efc3779
        )

    [108 - Funky Dee - Are You Gonna Bang.mp3] =&gt; Array
        (
            [name] =&gt; 108 - Funky Dee - Are You Gonna Bang.mp3
            [time] =&gt; 1309246243
            [size] =&gt; 3766429
            [hash] =&gt; 6605b648ead22ace8e5ce77e3c53801f
        )

    [109 - Mr M - Dash Down.mp3] =&gt; Array
        (
            [name] =&gt; 109 - Mr M - Dash Down.mp3
            [time] =&gt; 1309246243
            [size] =&gt; 4099700
            [hash] =&gt; 1dcb8a77de83ec0315fc4431ff31f311
        )

    [110 - S-X - Woooo.mp3] =&gt; Array
        (
            [name] =&gt; 110 - S-X - Woooo.mp3
            [time] =&gt; 1309246243
            [size] =&gt; 3364615
            [hash] =&gt; 5069b5956c99bcf468bc3fd00178cc22
        )

    [111 - Lil Silva - Different VIP.mp3] =&gt; Array
        (
            [name] =&gt; 111 - Lil Silva - Different VIP.mp3
            [time] =&gt; 1309246244
            [size] =&gt; 4019543
            [hash] =&gt; 8b73799089a8a8e64cdff8436fa8c446
        )

    [crossdomain.xml] =&gt; Array
        (
            [name] =&gt; crossdomain.xml
            [time] =&gt; 1309245738
            [size] =&gt; 216
            [hash] =&gt; 3cb3c78f77460e93c87faec3b50a8434
        )

)
</code></pre>

<p>I want to add up all the size keys. how can i do this i am looking a using array_sum but dont now how to change the array to just show the size key any help please.</p>

<p>;)</p>
