PHP scheduler without cron - php

Question

I want to run my php script for every 5 minutes. Here is my PHP code.
function call_remote_file($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);
}
set_time_limit(0);
$root='http://mywebsiteurl'; //remote location of the invoking and the working script
$url=$root."invoker.php";
$workurl=$root."script.php";
call_remote_file($workurl);//call working script
sleep(60*5);// wait for 300 seconds.
call_remote_file($url); //call again this script
I run this code once. It works perfectly, even after i close the entire browser window.
The problem is the stops working if i turn of my system's internet connect.
How to solve this problem. Please help me out.

Answer 1

While I wouldn't really recommend doing this for something critical (you're going to have stability issues), this could work:
function call_remote_file($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);
}
set_time_limit(0);
$root='http://mywebsiteurl'; //remote location of the invoking and the working script
$url=$root."invoker.php";
$workurl=$root."script.php";
while(true)
{
call_remote_file($workurl);//call working script
sleep(60*5);// wait for 300 seconds.
}
Another way would be to call it from the command line using exec():
function call_remote_file($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);
}
set_time_limit(0);
$root='http://mywebsiteurl'; //remote location of the invoking and the working script
$url=$root."invoker.php";
$workurl=$root."script.php";
call_remote_file($workurl);//call working script
sleep(60*5);// wait for 300 seconds.
exec('php ' . $_SERVER['SCRIPT_FILENAME']);
You should really use cron though if at all possible.

Answer 2

The above code is ok but if you want to add multiple scripts to run at different intervals then the coding becomes far more complicated.
If you try phpjobscheduler (open source so free to use) it provides an interface to add, modify and remove scripts to run.