Delete empty array element (with sort)

gistfile1.aw

<pre><?php

$arr[] = "b";
$arr[] = "";
$arr[] = "aa";
$arr[] = "c";
$arr[] = "";
$arr[] = "da";

print_r($arr);

sort($arr);

print_r($arr);

while(trim($arr[0]) == '' && count($arr) > 0) {
	array_shift($arr);
}

print_r($arr);
 ?>