Chat system example

<?php
/**
 * Add a message to the chat
 * @param Redis $redis Redis connection handler
 * @param String $message message to add
 * @return void
 */
function addMessage($redis, $message) {
	$redis->lPush("chat", $message);
	if($redis->lLen("chat") > 100) {
		$redis->rPop("chat");
	}
}

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