timelib_diff      146 ext/date/lib/timelib.h timelib_rel_time *timelib_diff(timelib_time *one, timelib_time *two);
timelib_diff     3649 ext/date/php_date.c 	interval->diff = timelib_diff(dateobj1->time, dateobj2->time);
timelib_diff     3994 ext/date/php_date.c 				*rt = timelib_diff(b, e);