altitude         4630 ext/date/php_date.c 	double latitude = 0.0, longitude = 0.0, zenith = 0.0, gmt_offset = 0, altitude;
altitude         4671 ext/date/php_date.c 	altitude = 90 - zenith;
altitude         4684 ext/date/php_date.c 	rs = timelib_astro_rise_set_altitude(t, longitude, latitude, altitude, 1, &h_rise, &h_set, &rise, &set, &transit);