A communication error occurred: “Operation timed out” Network Error (tcp_error)

A message came out when one “heavy” php script work :

Network Error (tcp_error)


A communication error occurred: “Operation timed out”
The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.
For assistance, contact your network support team.

Easy way to overcome this message is increase maximum execution time.

Create .htaccess file with this content :

php_value max_execution_time xxx

xxx in second, by default the value of this option is 30.

I try to change to 120 :

php_value max_execution_time 120

save the file and recheck it via phpinfo().