how run other php code by one php code asynchronous?

explain by example : f.php :

d$=$_Get['ad'];
 print 开发者_JS百科d$;

index.php :

 for $i=0 to 200000
     // run f.php?ad=i$

run f.php but dont wait to finish f.php how can do that?

1. i find php asynchronus but i dont now this is working realy or existing other solution or is this best solution?!!

2. when use exec and how ??

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The term your looking for is called forking. Here is a link to all the PHP docs you will need to fork your code into async procs.

http://php.net/manual/en/function.pcntl-fork.php

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If you're running linux and have access to php CLI you can have something like this:

<?php
// this will launch worker to run something... 
shell_exec('php worker.php >/dev/null &');

// the rest of the flow goes here
...
?>

worker.php could be writting stuff to a database, sending emails, whatever...