apache_child_terminate() will register the Apache process executing the current PHP request for termination once execution of PHP code it is completed. It may be used to terminate a process after a script with high memory consumption has been run as memory will usually only be freed internally but not given back to the operating system.
TRUE if PHP is running as an Apache 1 module, the Apache version
is non-multithreaded, and the
child_terminate PHP directive is
enabled (disabled by default). If these conditions are not met,
returned and an error of level
E_WARNING is generated.