static public function ping(\Base $f3, $params) {
		$hash = $params['hash'];
		// trigger ping event
		if ($f3->exists('mailer.on.ping',$ping_handler))
			$f3->call($ping_handler,array($hash));
		$img = new \Image();
		// 1x1 transparent 8bit PNG
		$img->load(base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMA'.
			'AAAl21bKAAAABGdBTUEAALGPC/xhBQAAAANQTFRFAAAAp3o92gAAAAF0U'.
			'k5TAEDm2GYAAAAKSURBVAjXY2AAAAACAAHiIbwzAAAAAElFTkSuQmCC'));
		$img->render();
	}
static public function ping(\Base $f3, $params) {
		$hash = $params['hash'];
		// trigger ping event
		if ($f3->exists('mailer.on.ping',$ping_handler))
			$f3->call($ping_handler,array($hash));
		$img = new \Image();
		// 1x1 transparent 8bit PNG
		$img->load(base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMA'.
			'AAAl21bKAAAABGdBTUEAALGPC/xhBQAAAANQTFRFAAAAp3o92gAAAAF0U'.
			'k5TAEDm2GYAAAAKSURBVAjXY2AAAAACAAHiIbwzAAAAAElFTkSuQmCC'));
		$img->render();
	}
static public function ping ( \ Base $ f3 , $ params ) { $ hash = $ params [ 'hash' ] ; // trigger ping event if ( $ f3 -> exists ( 'mailer.on.ping' , $ ping_handler ) ) $ f3 -> call ( $ ping_handler , array ( $ hash ) ) ; $ img = new \ Image ( ) ; // 1x1 transparent 8bit PNG $ img -> load ( base64_decode ( 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMA' . 'AAAl21bKAAAABGdBTUEAALGPC/xhBQAAAANQTFRFAAAAp3o92gAAAAF0U' . 'k5TAEDm2GYAAAAKSURBVAjXY2AAAAACAAHiIbwzAAAAAElFTkSuQmCC' ) ) ; $ img -> render ( ) ; }
receive and proceed message ping
@param Base $f3
@param $params
receive and proceed message ping