php忽略重定向if语句

Question

我正在制作一个包含各种输入字段的注册表单。我有 1 个字段为空时的验证码，还有整个表单为空时的验证码。当表单为空时，它将重定向回注册页面。但是如果我填写 1 个输入字段，他仍然运行空表单重定向而不是忽略那个并继续下一个 if 语句。

你们能帮帮我吗？

这是 HTML 代码:

<form class="register form" action="../app/controller/authController.php" method="POST">
            <div class="form-group">
                <select name="region" id="">
                    <option value="Americas">Americas</option>
                    <option value="Europe">Europe</option>
                    <option value="Asia">Asia</option>
                </select>
            </div>
            <div class="form-group">
                <input type="text" name="first_name" id="" placeholder="First Name">
                <?php if(isset($_SESSION['FN_error'] )) : ?>
                    <span class="error"><?php echo $_SESSION['FN_error']; ?></span>
                <?php unset($_SESSION['FN_error']); endif; ?>
            </div>
            <div class="form-group">
                <input type="text" name="last_name" id="" placeholder="Last Name">
                <?php if(isset($_SESSION['LN_error'] )) : ?>
                    <span class="error"><?php echo $_SESSION['LN_error']; ?></span>
                <?php unset($_SESSION['LN_error']); endif; ?>
            </div>
            <div class="form-group">
                <input type="email" name="email" id="" placeholder="E-mail Address">
                <?php if(isset($_SESSION['EA_error'] )) : ?>
                    <span class="error"><?php echo $_SESSION['EA_error']; ?></span>
                <?php unset($_SESSION['EA_error']); endif; ?>
            </div>
            <div class="form-group">
                <input type="email" name="confirm_email" id="" placeholder="Confirm E-mail Address">
                <?php if(isset($_SESSION['Confirm_email_error'])) : ?>
                    <span class="error"><?php echo $_SESSION['Confirm_email_error']; ?></span>
                <?php unset($_SESSION['Confirm_email_error']); endif; ?>
            </div>
            <div class="form-group">
                <input type="password" name="password" id="" placeholder="Password">
                <?php if(isset($_SESSION['PS_error'] )) : ?>
                    <span class="error"><?php echo $_SESSION['PS_error']; ?></span>
                <?php unset($_SESSION['PS_error']); endif; ?>
            </div>
            <div class="form-group">
                <input type="password" name="confirm_password" id="" placeholder="Confirm Password">
                <?php if(isset($_SESSION['Confirm_pass_error'] )) : ?>
                    <span class="error"><?php echo $_SESSION['Confirm_pass_error']; ?></span>
                <?php unset($_SESSION['Confirm_pass_error']); endif; ?>
            </div>
            <div class="form-group">
                <input type="text" name="age" id="" placeholder="Age">
                <?php if(isset($_SESSION['AGE_error'] )) : ?>
                    <span class="error"><?php echo $_SESSION['AGE_error']; ?></span>
                <?php unset($_SESSION['AGE_error']); endif; ?>
            </div>
            <div class="form-group">
                <input type="submit" name="type" value="Register" class="register button">
            </div>
        </form>

这是 PHP 代码:

if ($_SERVER['REQUEST_METHOD'] == 'POST') {

if ($_POST['type'] == 'Register') {

    if (trim($_POST['first_name']) == "") {
        $_SESSION['FN_error'] = "Field cannot be empty!";
        $user->redirect('register.php');
        exit();
    }

    if (trim($_POST['last_name']) == "") {
        $_SESSION['LN_error'] = "Field cannot be empty!";
        $user->redirect('register.php');
        exit();
    }

    if (trim($_POST['email']) == "") {
        $_SESSION['EA_error'] = "Field cannot be empty!";
        $user->redirect('register.php');
        exit();
    }

    if (trim($_POST['password']) == "") {
        $_SESSION['PS_error'] = "Field cannot be empty!";
        $user->redirect('register.php');
        exit();
    }

    if (trim($_POST['age']) == "") {
        $_SESSION['AGE_error'] = "Field cannot be empty!";
        $user->redirect('register.php');
        exit();
    }

    if (trim($_POST['confirm_email']) == "") {
        $_SESSION['Confirm_email_error'] = "Field cannot be empty!";
        $user->redirect('register.php');
        exit();
    } elseif($_POST['email'] != $_POST['confirm_email']) {
        $_SESSION['Confirm_email_error'] = "E-mail Address does not match!";
        $user->redirect('register.php');
        exit();
    }

    if (trim($_POST['confirm_password']) == "") {
        $_SESSION['Confirm_pass_error'] = "Field cannot be empty!";
        $user->redirect('register.php');
        exit();
    } elseif($_POST['password'] != $_POST['confirm_password']) {
        $_SESSION['Confirm_pass_error'] = "Password does not match!";
        $user->redirect('register.php');
        exit();
    }

Answer 1

<?php
if($_SERVER['REQUEST_METHOD'] == 'POST')
{   
    $i=0;
    $names=array('first_name', 'last_name','email','password','age','confirm_email');
    foreach($names as $field) {
      if (empty($_POST[$field])) {
        $_SESSION[$field.'error'] = "Field cannot be empty!";
        $i++;
      }
      else
      {
          unset($_SESSION[$field.'error']);
      }
    }
    if(sizeof($names)==$i)
    {   
        $user->redirect('register.php');
    }

}
?>