Hi! I made this script to test the execution of php in background

foreach($tests as $test) { exec("php test.php ".$test["id"]); }

to run php in background like suggested in php process background and How to add large number of event notification reminder via Google Calendar API using PHP? and php execute a background process

But the script do not run faster than when it was all in one script without the addition of test.php.

what I'm doing wrong?

thanks in advance!