Laravel macro to display flash alert messages

html.macros.php

/**
 * Display Error / Success / Warn / Info messages
 * 
 * These messages are set using Session::flash(<message_type>, <message>);
 */
HTML::macro("alert", function(){
	$alerts = array();
	$alert_types = array("error", "success", "warn", "info");
	foreach ($alert_types as $type) {
		if( Session::has($type) ){
			array_push($alerts, '<div class="alert alert-'. $type .'">');
			array_push($alerts, '<button type="button" class="close" data-dismiss="alert">x</button>');
			array_push($alerts, Session::get($type) );
			array_push($alerts, '</div>');
		}
	}
	return implode("", $alerts);
});