for for if matrix matrix break if break

for($x=0;$x<$w;$x++){
	for($y=0;$y<$h;$y++){
		if($matrix[$x][$y] == 1){
			$matrix[$x][$y] = 2;
			$c = 1;
			break;
		}
	}
	if($c){
		$c = 0;
		break;
	}
}