Check if justin.tv stream is live, display if it is

jtv.php

<?
	//Script for Saskgamers.com
	//Determines if a user's justin.tv stream is online, then displays it if it is
	//To add more streams add the justin.tv channel id to the $streams array
	$chan = "";
	$streams = array(
	"puttly", "j4sh", "strainkiss", "milfhunter", "gorgenzola", "steven_bonnell_ii"
	);
	echo "<span class=\"smalltext\"><strong>Live User Streams:</strong> ";
	foreach ($streams as &$i) {
		$chan = "http://api.justin.tv/api/stream/list.json?channel=" . $i;
		$json = file_get_contents($chan);
		$exist = strpos($json, 'name');
		if($exist) {
			echo " <a href=\"http://justin.tv/" . $i . "\">" . $i . "</a>";
		}
		
	}
	echo "</span><br />";

?>