<?php
// 检查是否有表单提交
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // 获取用户输入的名字
    $name = htmlspecialchars($_POST['name']);
} else {
    $name = "";
}
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Simple PHP Page</title>
</head>
<body>
    <h1>Welcome to My PHP Page</h1>
    <p>Current Time: <?php echo date('Y-m-d H:i:s'); ?></p>

    <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>">
        <label for="name">Enter your name:</label>
        <input type="text" id="name" name="name" value="<?php echo $name; ?>">
        <input type="submit" value="Submit">
    </form>

    <?php
    if (!empty($name)) {
        echo "<p>Welcome, $name!</p>";
    }
    ?>
</body>
</html>

哈哈哈哈哈

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