Multi Process In Same Time

In one of my scripti i use processes in same time.
For example think like downloading 10 files in same time. Think files as processes. I won't download something. I will grab daha with curl from a website.
I checked google for this i saw curl_multi but i couldn't find good article about it .
Is there someone that has experience about this ?

 

I don't think curl_multi(_select?) has anything to do with this, but I could be wrong. However, if your PHP installation (or the one at your hoster) allows it, you should be able to use fork() or & to create processes, for instance;

<?
$pidlist = array();
for ($i=0;$i<10;$i++) { // just for testing 10 'downloads'
$pid = pcntl_fork();
if (!$pid) {
sleep(rand(0,5)); // just for testing, remove
echo "Do the curl download here! $i\n";
exit;
} else {
$pidlist[] = $pid;
}
}

// make sure there are no zombies
foreach($pidlist as $pid) {
pcntl_waitpid($pid, $status);
echo "Done\n";
}

echo "Do something with the downloads here\n";
?>

Or, when you have an external download program;

$some_param = "bla";
for($i=0;$i<10;$i++)
`my_download_script.php $some_param &`;

Hope this helps a bit.