Pass data of URL argument in PHP

Extract arguments by specify URL. In the $_GET array, the value specified by the URL is substituted. In the first argument, argument names in the URL are enclosed in single quotation marks.

if(isset($_GET['preview_date'])){
	$date = $_GET['preview_date'];
	echo $date . "<br>";
}
if(isset($_GET['preview_time'])){
	$time = $_GET['preview_time'];
	echo $time;
}