$ _POST作为函数参数

<form action="process.php" method="post">
 <label for="name">Name:</label>
 <input type="text" id="name" name="name"><br><br>
 <label for="email">Email:</label>
 <input type="email" id="email" name="email"><br><br>
 <input type="submit" value="Submit">
</form>

$name = $_POST['name'];
$email = $_POST['email'];

function process_form_data($post_data) {
  $name = $post_data['name'];
  $email = $post_data['email'];
  // 处理数据的其他部分
}

process_form_data($_POST);