Thank people for the last question, now, i know how to make continue the child process. But my question ... how i do for continue the script running when the web client connection abort. Well, the script run in web server and have a very big regexp than take 10 minute for process, in this time, the web server connection close, because (i suppoust) expire the time (timeout). Well i think that a child process resolve this problem, and i know how to continue... But only for know.... How i do for continue running the script in the server when the client connection abort, żIs this possible? Thx all again.