PHP 日期选择页面 - 创建一个简单的日历选择器 - 常规

<!DOCTYPE html>
<html>
<head>
	<title>选择日期</title>
	<style type="text/css">
		body{
			font-family: Arial, sans-serif;
			font-size: 16px;
			margin: 0;
			padding: 0;
		}
		h1{
			text-align: center;
			margin-top: 20px;
		}
		form{
			width: 400px;
			margin: 0 auto;
		}
		select{
			display: block;
			margin: 20px auto;
			font-size: 18px;
			padding: 5px;
		}
		input[type="submit"]{
			display: block;
			margin: 20px auto;
			font-size: 18px;
			padding: 5px;
			background-color: #4CAF50;
			color: white;
			border: none;
			border-radius: 5px;
			cursor: pointer;
		}
	</style>
</head>
<body>
	<h1>请选择日期</h1>
	<form method="get">
		<label>年份：</label>
		<select name="year">
			<?php 
				for($i=2010; $i<=2030; $i++){
					echo '<option value='$i'>$i</option>';
				}
			?>
		</select>
		<label>月份：</label>
		<select name="month">
			<option value="January">January</option>
			<option value="February">February</option>
			<option value="March">March</option>
			<option value="April">April</option>
			<option value="May">May</option>
			<option value="June">June</option>
			<option value="July">July</option>
			<option value="August">August</option>
			<option value="September">September</option>
			<option value="October">October</option>
			<option value="November">November</option>
			<option value="December">December</option>
		</select>
		<label>日：</label>
		<select name="day">
			<?php 
				for($i=1; $i<=31; $i++){
					echo '<option value='$i'>$i</option>';
				}
			?>
		</select>
		<input type="submit" value="提交">
	</form>
	<?php 
		if(isset($_GET['year']) && isset($_GET['month']) && isset($_GET['day'])){
			echo '<p>您选择的日期是：' . $_GET['year'] . '年' . $_GET['month'] . $_GET['day'] . '日</p>';
		}
	?>
</body>
</html>