Long Polling using jQuery and PHP

Question

So, I\'ve been trying to do Long-Polling using the jQuery Library and PHP. I\'m doing this so I can make some sort of real-time notifications system in the future. The code

Answer 1

Try to use this for ajax.php

<?php
    if(rand(1, 100) % 2) {
        echo 'even<br />';
    } else {
        sleep(rand(8, 12));
    }   
?>

watch this and sometimes you have to wait up to 12 seconds

if you let him to complete in one second it appears to be broken, but it's not