This example shows how to run a live chart with data retrieved from the server each second. Study the source code for details.
This is the content of the PHP file, live-server-data.php:
<?php // Set the JSON header header("Content-type: text/json"); // The x value is the current JavaScript time, which is the Unix time multiplied by 1000. $x = time() * 1000; // The y value is a random number $y = rand(0, 100); // Create a PHP array and echo it as JSON $ret = array($x, $y); echo json_encode($ret); ?>