ainfo_cal_date_optional 535 ext/intl/php_intl.c ZEND_BEGIN_ARG_INFO_EX( ainfo_cal_date_optional, 0, 0, 1 ) ainfo_cal_date_optional 832 ext/intl/php_intl.c PHP_FE( intlcal_is_weekend, ainfo_cal_date_optional )