Background
In the previous article, we examined the PHP AJAX Framework, which is an easy way of combining AJAX with PHP. In order to trigger our AJAX, we relied on user interaction. However, what happens when you want your AJAX call to execute at a certain time interval? The solution is relatively easy and involves the JavaScript function setInterval().
AJAX Timer Code
Below is a snippet of JavaScript code that will work with my PHP AJAX Framework to call the sales_calculate hook every 5 seconds:
<script language="JavaScript"> var time = 5; //time in seconds var interval = time * 1000; var timer = setInterval("ajaxHelper('sales_calculate')", interval); </script>
The above code will execute our ajaxHelper() function with the sales_calculate hook that will in turn call sales_calculate_setup() and then sales_calculate_ajax() every 5 seconds.
Note that this code is meant to accompany my PHP Framework, and will not trigger an AJAX call unless properly configured. Please refer to the prior AJAX Framework article for more information.
