CRON Job using Curl. - php

Question

I have a PHP Code, which reloads itself with another GET value. Like: example.com?number=453 and it keeps doing this for days. I was doing this in the browser. But i found cron job is way better.
So, I need to use CURL to reload the page with a new GET value like ?number=550. So this is the code, which i use (found it on stackoverflow)
function curl_download($Url){
// is cURL installed yet?
if (!function_exists('curl_init')){
die('Sorry cURL is not installed!');
}
// OK cool - then let's create a new cURL resource handle
$ch = curl_init();
// Now set some options (most are optional)
// Set URL to download
curl_setopt($ch, CURLOPT_URL, $Url);
// Set a referer
curl_setopt($ch, CURLOPT_REFERER, "http://www.example.org/yay.htm");
// User agent
curl_setopt($ch, CURLOPT_USERAGENT, "MozillaXYZ/1.0");
// Include header in result? (0 = yes, 1 = no)
curl_setopt($ch, CURLOPT_HEADER, 0);
// Should cURL return or print out the data? (true = return, false = print)
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Timeout in seconds
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
// Download the given URL, and return output
$output = curl_exec($ch);
// Close the cURL resource, and free system resources
curl_close($ch);
return $output;
}
$output = curl_download("http://www.example.com/yourscript.php?number='$requestsDone'");
And at the end of the page, i use this, to call the function
curl_download($Url);
But i am getting this error:
Notice: Undefined variable: Url
in the last line, i.e curl_download($Url);
This is how we call the function right? What's wrong? Also is there any mistake or improvement, I can make in the code?

Answer 1

You not assign values ​​to variables $Url.
Before you can assign values ​​to variables $Url. That like $Url = "http://domaintest.com/?number=550";
curl_download($Url);