php_add_tick_function  516 ext/pcntl/pcntl.c 	php_add_tick_function(pcntl_signal_dispatch, NULL);
php_add_tick_function 5684 ext/standard/basic_functions.c 		php_add_tick_function(run_user_tick_functions, NULL);
php_add_tick_function   30 main/php_ticks.h PHPAPI void php_add_tick_function(void (*func)(int, void *), void *arg);