PHP登录系统和会话失败

所以我下面的代码总是登录失败，它通过了检查方法，但它总是让我在if-else部分中登录失败。我的代码有什么问题吗？ 我不知道为什么我的代码用于注册，但登录页面失败

 <?php
require_once "core/init.php";

  $errors = array();

if( Input::get('submit')){

  //1. call object
$validation = new Validation();

  //2. check method
  $validation = $validation->check(array(
    'username' => array( 'required' => true),
    'password' => array( 'required' => true)
  ));

  //3. passed Validation
  if($validation->passed() ){

  if($admin->login_admin( Input::get('username'),Input::get('password') ) )
  {
    Session::set('username', Input::get('username'));
    header('Location: adminindex.php');
   }else{
     $errors[] = "login failed";

   }

  }else {
    $errors = $validation->errors();
  }
}

require_once "templates/header.php";
 ?>

<form class="" action="login2.php" method="post">

  <label>ID Admin</label>
  <input type="text" name="username">

  <label>Password</label>
  <input type="password" name="password">

    <?php if(!empty($errors)){ ?>
      <div id="errors">
        <?php foreach ($errors as $error) { ?>
          <li><?php echo $error; ?></li>
    <?php    } ?>
      </div>
    <?php } ?>

  <input type="submit" name="submit" value="Log In">

</form>

<?php
require_once "templates/footer.php";
?>

这是获取信息功能的代码

 public function get_info($table, $column, $value){

    if(!is_int($value))
      $value = "'" .$value. "'";

    $query = "SELECT * FROM $table WHERE $column = $value";
    $result = $this->conn->query($query);

    while($row = $result->fetch_assoc()){
      return $row;
    }
  }

我的注册页面也有类似的页面，但它成功地设置了会话并将我重定向到我想要的页面

<?php
require_once "core/init.php";

  $errors = array();

if( Input::get('submit')){

  //1. memanggil objek validasi
$validation = new Validation();
  //2. metode check
  $validation = $validation->check(array(
    'username' => array(
                          'required' => true,
                          'minimal' => 5,
                          'maximal' => 20,
                        ),
    'password' => array(
                      'required' => true,
                      'minimal' => 5,
                    ),
    'division' => array(
                      'required' => true,
                    )
  ));
  //3. passed Validation
  if($validation->passed() ){
  $admin->register_admin(array(
    'username' => Input::get('username'),
    'password' => password_hash(Input::get('password'), PASSWORD_DEFAULT),
    'division' => Input::get('div')
  ));

    Session::set('username', Input::get('username'));
    header('Location: adminindex.php');

  }else {
    $errors = $validation->errors();
  }
}

require_once "templates/header.php";
 ?>

<form class="" action="registeradmin.php" method="post">

  <label>ID Admin</label>
  <input type="text" name="username">

  <label>Password</label>
  <input type="password" name="password">

  <label>division</label>
  <input type="text" name="div">

    <?php if(!empty($errors)){ ?>
      <div id="errors">
        <?php foreach ($errors as $error) { ?>
          <li><?php echo $error; ?></li>
    <?php    } ?>
      </div>
    <?php } ?>

  <input type="submit" name="submit" value="add Admin">

</form>

<?php
require_once "templates/footer.php";
 ?>

ID管理员
密码
分开

您是否检查了“管理员”表。注册数据是否感兴趣？我想你应该在这里使用post:if（$admin->login\u admin（输入：：get（'username'），输入：：get（'password'）），因为你使用的是formbtw中的post。对不起，我的语法和解释不好，我已经检查了admin表，数据存在，如果我取消对打印的注释，数据就会消失，它成功地在另一个页面中获取了数据记录i define Input:：get（'params'），因此它将是灵活的，并根据我们使用的方法设置方法

<?php
require_once "core/init.php";

  $errors = array();

if( Input::get('submit')){

  //1. memanggil objek validasi
$validation = new Validation();
  //2. metode check
  $validation = $validation->check(array(
    'username' => array(
                          'required' => true,
                          'minimal' => 5,
                          'maximal' => 20,
                        ),
    'password' => array(
                      'required' => true,
                      'minimal' => 5,
                    ),
    'division' => array(
                      'required' => true,
                    )
  ));
  //3. passed Validation
  if($validation->passed() ){
  $admin->register_admin(array(
    'username' => Input::get('username'),
    'password' => password_hash(Input::get('password'), PASSWORD_DEFAULT),
    'division' => Input::get('div')
  ));

    Session::set('username', Input::get('username'));
    header('Location: adminindex.php');

  }else {
    $errors = $validation->errors();
  }
}

require_once "templates/header.php";
 ?>

<form class="" action="registeradmin.php" method="post">

  <label>ID Admin</label>
  <input type="text" name="username">

  <label>Password</label>
  <input type="password" name="password">

  <label>division</label>
  <input type="text" name="div">

    <?php if(!empty($errors)){ ?>
      <div id="errors">
        <?php foreach ($errors as $error) { ?>
          <li><?php echo $error; ?></li>
    <?php    } ?>
      </div>
    <?php } ?>

  <input type="submit" name="submit" value="add Admin">

</form>

<?php
require_once "templates/footer.php";
 ?>