How can AJAX requests be utilized to transfer data between JavaScript and PHP?

AJAX requests can be utilized to transfer data between JavaScript and PHP by sending asynchronous HTTP requests from the client-side JavaScript code to a PHP script on the server. The PHP script processes the request, interacts with the database or performs any necessary operations, and sends back a response to the client-side JavaScript code. 

<?php
// Receive data from an AJAX request
$data = $_POST['data'];

// Perform operations on the data
$result = processData($data);

// Send back a response to the client-side JavaScript code
echo json_encode($result);

// Function to process the data
function processData($data) {
    // Process data here
    return $processedData;
}
?>

Keywords

AJAX JavaScript PHP data transfer XMLHttpRequest

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