Move an element to first position in an array
<p>here is my array:</p>

<pre><code>Array
(
    [0] =&gt; Array
        (
            [id] =&gt; 8
            [title] =&gt; MUSIC
        )

    [1] =&gt; Array
        (
            [id] =&gt; 17
            [title] =&gt; Indie
        )

    [2] =&gt; Array
        (
            [id] =&gt; 14
            [title] =&gt; SPORTS
        )

    [3] =&gt; Array         // Need to move this on first position
        (
            [id] =&gt; 15
            [title] =&gt; Hipster  
        )

    [4] =&gt; Array
        (
            [id] =&gt; 16
            [title] =&gt; Web Seriesdf
        )
   )
</code></pre>

<p>I want array with key [3] to be on first position and then the rest of the elements. 
I tried array_merge and array_unshift. But not working</p>