After a 2-hour outage, came up with an idea to redistribute ad from two server, in which one is main server and other is the backup one, checking for the connection to the main server in 2 sec, then 2 sec for verifying the backup server is also online, if after 4 sec there is no server online, the ad distribution code will terminate by returning nothing.
This would help the main script work normally with failure in request for ads.
The precedent code, there was no function for 2 servers, and there was even no time-out for the script execution this led to the fatal error “Execution Time” and the main script could not work either.
2 hours for a new method 
but the server is still so unstable now.
Hi, I'm CA RO,
Oh, 1 and found out the runkit PHP extension conflicts with eAccelerator.
What a bug
now everything is on its way, server free.fr is a bit sucks, need to find a new one to serve ads better
Last update on this issue:
Put the function to check server online out of the function serving ads, so for one inclusion, one test would be made, reduce enormously testing time. With this change, third server was added to assure the good execution of the ad-serving function. This third server is ads.link2caro.com
Somehow, trying to use another server than ads.link2caro, to reduce the work weighing on my server’s shoulders.
Don’t get the same script works on some site and not on some others!!!
Just add “global $host_test” in the main class, and everything is in order now