how can I sort an array in php?
<p>Example :</p>

<pre><code>$a [] = array ('google','bing','yahoo');
$a [] = array ('America','France','Germany');
$a [] = array ('Africa','Asia','Europe');
</code></pre>

<p>And I want to sort her in table like that :</p>

<p>Africa.......
America........
google.......</p>
