How do I retrieve a specific response from a PHP file using AJAX?

Utilizing AJAX to Retrieve PHP File Response

When employing AJAX to transmit form data for processing in PHP, you may require the PHP file to return a specific response, such as a fruit name. To handle the response in your AJAX callback, follow these steps:

1. Set Up PHP File to Echo Response:

In your process.php file, add the following code to echo the desired response:

<code class="php"><?php echo 'apple'; ?></code>

2. Define AJAX Success Callback in JavaScript:

Within your success function in the AJAX request, specify the parameter data to receive the response from the server:

<code class="javascript">success: function(data) {
    // The response can be stored in the 'data' variable
    console.log(data); // Output: apple
}</code>

Data Format in PHP File:

Plain text responses are sufficient for most cases. No need for JSON unless you require data structuring.

Naming POST Request:

The example code provided doesn't specify the data parameter for the POST request. To name it, pass an object with the property and value:

<code class="javascript">$.ajax({
    type: "POST",
    url: "process.php",
    data: {
        fruit: 'banana'
    }</code>

The above is the detailed content of How do I retrieve a specific response from a PHP file using AJAX?. For more information, please follow other related articles on the PHP Chinese website!