PHP - Connexion AJAX ne fonctionne pas

Question

Je travaille actuellement sur un système de connexion AJAX, mais il n'envoie aucune réponse. Il envoie seulement une réponse quand je exit("error here") le script, mais je veux retourner une réponse JSON.

Ma forme:

<div id="account" class="modal" role="dialog"> 
    <div class="modal-dialog"> 
     <form method="post" id="login-form"> 
      <div class="modal-content"> 
       <div class="modal-header"> 
        <h4 class="modal-title">Sign in</h4> 
       </div> 
       <div class="modal-body"> 
         <p> 
          Email address:<br /> 
          <input type="email" class="form-control" placeholder="Email address" name="user_email" id="user_email" /> 
         </p> 
         <p> 
          Password:<br /> 
          <input type="password" class="form-control" placeholder="Password" name="password" id="password" /> 
         </p> 
        </form> 
       </div> 
       <div class="modal-footer"> 
        <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button> 
        <button type="submit" class="btn btn-default" name="btn-login" id="btn-login">LOGIN</button> 
       </div> 
      </div> 
     </form> 
    </div> 
</div> 

Mon JavaScript:

$("#btn-login").click(function(e) { 
     alert('submit'); 
     var data = $("#login-form").serialize(); 
     alert(data); 
     $.ajax({ 
      url: 'ajax.php', 
      type: 'POST', 
      data: data, 
      success: function(response) { 
       var data = response.responseText; 
       var resp = $.parseJSON(data); 

       if (resp.error) { 
        alert('error: ' + response); 
       } else { 
        alert('success: ' + response); 
       } 
      } 
     }); 
     event.preventDefault(); 
    }); 

Mon PHP:

if(isset($_POST['user_email']) && is_ajax()) { 
    $engine->expireLoginAttempts(); 
    $engine->expireLoginBan(); 

    if(!$engine->isLoginBanned()) { 
     $email = strip_tags($_POST['user_email']); 
     $password = strip_tags($_POST['password']); 

     if($engine->doLogin($email,$password)) { 
      $engine->expireBan(); 

      if($maintenanc['value'] == '1' && !$engine->isStaff()) { 
       echo json_encode(array(
        'success' => '0', 
        'message' => 'You can\'t login using a regular account because the site is currently under maintenance.' 
       )); 
      } elseif($engine->isBanned() && !$engine->isOwner()) { 
       // Account banned; notify and give a timestamp + reason 
       $stmt = $engine->runQuery("SELECT timestamp, expiration, reason FROM banned WHERE user_id=:user_id"); 
       $stmt->execute(array(':user_id'=>$_SESSION['user_id'])); 
       $userRow = $stmt->fetch(PDO::FETCH_ASSOC); 
       $blockdate1 = strtotime('+' . $userRow['expiration'], strtotime($userRow['timestamp'])); 
       $blockdate2 = date('d-m-Y H:i:s', $blockdate1); 

       echo json_encode(array(
        'success' => '0', 
        'message' => 'This account is suspended until ' . $blockdate2 . ' because of the following reason: ' . $userRow['reason'] . '.' 
       )); 
      } else { 
       echo json_encode(array(
        'success' => '1', 
        'message' => $_SESSION['user_name']; 
       )); 
      } 
     } else { 
      // Create login attempt if the account exists and the ip is different from the register ip 
      $stmt = $engine->runQuery("SELECT user_email, user_id, user_ip FROM users WHERE user_email=:email"); 
      $stmt->execute(array(':email'=>$email)); 
      $userRow = $stmt->fetch(PDO::FETCH_ASSOC); 
      if($stmt->rowCount() == 1 && $userRow['user_ip'] !== $_SERVER["REMOTE_ADDR"]) { 
       $engine->createLoginAttempt($userRow['user_id'], $_SERVER["REMOTE_ADDR"]); 
      } 

      // Bruteforce attack suspected, bans the ip after 10 attempts from an unknown ip 
      $attemptban = $engine->runQuery("SELECT * FROM loginattempt WHERE ip=:ip"); 
      $attemptban->execute(array(':ip'=>$_SERVER["REMOTE_ADDR"])); 
      if($attemptban->rowCount() > 4) { 
       if($engine->loginban()) { 
        $engine->deleteLoginAttempts($_SERVER["REMOTE_ADDR"]); 
       } 
      } 

      echo json_encode(array(
       'success' => '0', 
       'message' => 'Emailaddress and/or password invalid.' 
      )); 
     } 
    } 
} 

Quelqu'un sait-il ce que je fais mal? J'ai essayé exit ing json_encode, en mettant exit() après chaque json_encode mais aucun ne semble fonctionner .. Toute aide est grandement appréciée!

Answer 1

Essayez d'ajouter quelque chose à l'autre et voir ce qui s'est passé.

if(!$engine->isLoginBanned()){ 
 
    ... 
 
} else { 
 
    // Try add something here and see what's happen, eg. 
 
    echo json_encode(array(
 
     'success' => '0', 
 
     'message' => 'Sorry, isLoginBanned'; 
 
    )); 
 
}