Question

这是我的PHP代码

 <?php
      session_start();
      require_once __DIR__ . '/../../core/FbChatMock.php';
      if (isset($_POST['id'])) 
       {
        $userId = (int) $_SESSION['user_id'];
        $id = htmlentities($_POST['id'],  ENT_NOQUOTES);
        $chat = new FbChatMock(); 
        $messages = $chat->getchat($userId, $id); 
        echo json_encode($messages);
       }
        $chat_converstaion = array();
        $chat_converstaion[] = '<table>';  
     ?>

我想将$ userId，$ id和$ messages这三个变量传递给json_encode函数，因为我已经传递了$ messages。这是我的javascript函数，我在使用这个json_encode

  getMessage:function(ID) {
  alert('function is at getMessage');
  var that = this;
  $.ajax({
  url: '../forms/ajax/get_messages.php',
  method:'post',
  data: {id: ID},
  success: function(data) {
    alert(data);
    var messages = JSON.parse(data);
    for (var i = 0; i < messages.length; i++)
      {
        var msg = messages[i];
        // alert (msg.message);
        fbChat.addUserMessage('',msg.message);
      }
        // alert(data);
        $('.msg_head').val('');
 //     that.getMessages();
    }
});
   },
  addUserMessage:function (user, message) 
     {
       msgBoxList = $('.msg_box').find('.msg_body');
       msgBoxList.append("<div class='msg_a'>"+message+"</div>");
     }
 };

如何从PHP代码中将该变量转换为此javascript ajax调用？

Answer 1

只需构建一个包含您希望传递的所有变量的数组，然后json_encode：

<?php
  session_start();
  require_once __DIR__ . '/../../core/FbChatMock.php';
  if (isset($_POST['id'])) 
   {
    $userId = (int) $_SESSION['user_id'];
    $id = htmlentities($_POST['id'],  ENT_NOQUOTES);
    $chat = new FbChatMock(); 
    $messages = $chat->getchat($userId, $id); 
    $return = array('userId' => $userId, 'id' => $id, 'chat' => $chat, 'messages' => $messages);
    echo json_encode($return);
   }
    $chat_converstaion = array();
    $chat_converstaion[] = '<table>';  
 ?>

然后从JSON.parse：

构建JS变量

[...]
success: function(data) {
  alert(data);
  var json_data = JSON.parse(data);
  var userId = json_data.userId;
  var id = json_data.id;
  var chat = json_data.chat;
  var messages = json_data.messages;
[...]

Answer 2

在PHP中进行少量修改：

NVL(V_ACTUAL_RESULT || '%', 'N/A')

和JS：

echo json_encode(['messages' => $messages, 'id' => $id, 'userId' => $userId]);

通过PHP json_encode将三个变量传递给javascript

2 个答案: