private function GetArrayVal($arr,$key,$not_defined_val = "")
	{
		return array_key_exists($key,$arr)
			? $arr[$key]
			: $not_defined_val;
	}
private function GetArrayVal($arr,$key,$not_defined_val = "")
	{
		return array_key_exists($key,$arr)
			? $arr[$key]
			: $not_defined_val;
	}
private function GetArrayVal ( $ arr , $ key , $ not_defined_val = "" ) { return array_key_exists ( $ key , $ arr ) ? $ arr [ $ key ] : $ not_defined_val ; }
Util to return array values without throwing an undefined error

@param Array $arr
@param variant $key
@param variant $not_defined_val value to return if array key doesn't exist
@return variant
Util to return array values without throwing an undefined error