Can't get this working

[bob7l]

So I've been trying to convert my raw data into easy readable data for awhile now, sadly.. No luck! I'm brand new to php and still trying to learn!

				$changeString = "";
				foreach (explode("@", $fdata) as $change) {
					$changes = array();
					
						if ($change == "") break;
						$item = explode("~", $change);
						$change = $item[1] . "x " . getBlockName($item[0]);
						
					if ($change[0] == "+" $changeString .= '<span style="color: green">+(' . trim(implode(", ", $changes)) . ')</span>';
					if ($change[0] == "-" $changeString .= '<span style="color: red">-(' . trim(implode(", ", $changes)) . ')</span>';
				}
				$fdata = $changeString;
				break;

Here is the entire file: http://pastebin.com/xXYnF0Ks

 

The raw data looks like "-24:2~1@-21~1@-17:1~1@-17~1@-25~1@-12~1"

The "-" sign means something was removed and needs to be red, while the positive sign means something was added. The @ symbol splits each of the item entries up. The ":" symbol sepreates the ID from the dataid, and the ~ sepreates the ID/DataID from the amount. I would love any kind of support!