Split word by capital letter
<p>I want to split a word by capital letter in PHP</p>

<p>for example:</p>

<pre><code>$string = "facebookPageUrl";
</code></pre>

<p>I want it like this:</p>

<pre><code>$array = array("facebook","Page","Url");
</code></pre>

<p>How should I do it? I want the shortest and most efficient way.</p>
