Description:
------------
I think this could be a useful function in some cases. It's !really! basic but I need it pretty often (ok not thaaat often).

Why did I request it? It saves me some lines plus a variable.

Reproduce code:
---------------
//with function

function array_get($array, $key)
{
	return $array[$key];
}

$img = 'someimg.png';

echo '<img src="'.$img.'" '.array_get(getimagesize($img),3).'>

//without

$img = 'someimg.png';
$widthheight = getimagesize($img);
$widthheight = $widthheight[3];

echo '<img src="'.$img.'" '.$widthheight.'>