<?php
$str  = "-638,-663,28 + 180,-60,50 + 838,-473,22 + 21,230,11 + 35,162,28 + 88,-33,22 + -346,632,22";
$coords = explode("+", $str);
foreach($coord as $coords)
{
	list($x, $y, $r) = split(',', trim($coord));
	print("X:".$x." Y:".$y." R:".$r."\n"); 
}

	
?>