date_sub          421 ext/date/php_date.c 	PHP_FE(date_sub, arginfo_date_sub)
date_sub          476 ext/date/php_date.c 	PHP_ME_MAPPING(sub,			date_sub,			arginfo_date_method_sub, 0)
date_sub         3267 ext/date/php_date.c PHP_FUNCTION(date_sub)
date_sub           63 ext/date/php_date.h PHP_FUNCTION(date_sub);