How to get JavaScript function data into a PHP variable

Question

I am using PHP and JavaScript. My JavaScript code contains a function, get_data():

function get_Data(){
    var name;
    var job;
    .....

    return buffer;
}

Now I have PHP code with the following.

<?php
    $i=0;
    $buffer_data;

    /* Here I need to get the value from JavaScript get_data() of buffer;
       and assign to variable $buffer_data. */
?>

How do I assign the JavaScript function data into the PHP variable?

Answer 1

Use jQuery to send a JavaScript variable to your PHP file:

$url = 'path/to/phpFile.php';

$.get($url, {name: get_name(), job: get_job()});

In your PHP code, get your variables from $_GET['name'] and $_GET['job'] like this:

<?php
    $buffer_data['name'] = $_GET['name'];
    $buffer_data['job']  = $_GET['job'];
?>

Answer 2

JavaScript code is executed clientside while PHP is executed serverside, so you'll have to send the JavaScript values to the server. This could possibly be tucked in $_POST or through Ajax.