在AJAX到PHP请求之后，是否可以将变量从PHP发送回AJAX? [英] Is it possible to send variables back from PHP to AJAX after AJAX to PHP request?

问题描述

我有一个AJAX请求，该请求从PHP的SQL数据库中获取一些信息.

I have an AJAX request that fetches some info from a SQL database in PHP.

问题是，我需要使用变量将其发送回AJAX.不只是在屏幕上回显所有内容.

The problem is, I need to send it back to AJAX in variables. Not to just echo it all out on screen.

这可能吗?如果是这样，我将如何做这样的事情?

Is this possible? If so, how would I go about doing something like this?

谢谢.

推荐答案

是的，您可以

Yes, you could json_encode the variable you want to send back to client.

echo json_encode( array('variable' => 'your value' ) ); 

请求完成后，客户端将通过回调接收数据.在没有更多细节说明的情况下，我可以提供更多细节，但我可以提供代码示例，具体取决于您使用的是JavaScript库(例如jQuery)还是原始XHR请求.

The client will receive the data through a callback when the request is completed. Without more clarification on specifics that's all i can offer, with some more details i can provide code samples depending on whether you're using a JavaScript library such as jQuery or doing a raw XHR request.

因此在jquery中检索上面的变量，您将执行以下操作.

so in jquery to retrieve the variable above you would do the following.

$.getJSON('yourfile.php', function(data){
      console.log( data.variable ); 
}); 

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