best to do

when you do this


public function getColorFromImage($imagePath,$x = 0,$y = 0)
{
if (isset($imagePath))
{
..

}
else die();
}

I think is better for debugging and to reading script to do like this


public function getColorFromImage($imagePath,$x = 0,$y = 0)
{
if (!isset($imagePath) && $imagePath=="") throw new Exception("thank to put a real path");
..

}