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<?php function destinationPoint($lat, $lng, $brng, $dist) { $rad = 6371; // earths mean radius $dist = $dist/$rad; // convert dist to angular distance in radians $brng = deg2rad($brng); // conver to radians $lat1 = deg2rad($lat); $lon1 = deg2rad($lng); $lat2 = asin(sin($lat1)*cos($dist) + cos($lat1)*sin($dist)*cos($brng) ); $lon2 = $lon1 + atan2(sin($brng)*sin($dist)*cos($lat1),cos($dist)-sin($lat1)*sin($lat2)); $lon2 = fmod($lon2 + 3*M_PI, 2*M_PI) - M_PI; // normalise to -180..+180ยบ $lat2 = rad2deg($lat2); $lon2 = rad2deg($lon2); echo "lat = ".$lat2."\n"; echo "lon = ".$lon2."\n\n"; } $lat = 0; $lng = 0; $dist = 1; // km $n = 12; $bearings = range(0, 360-(360/$n) , 360/$n); // create array of all bearings needed from $lat/$lng foreach($bearings as $brng){ echo $brng ."\n"; destinationPoint($lat, $lng, $brng, $dist); }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
0 lat = 0.0089932160591873 lon = 0 30 lat = 0.0077883535609834 lon = 0.0044966080572905 60 lat = 0.0044966080157459 lon = 0.0077883535850179 90 lat = 5.5067566078507E-19 lon = 0.008993216059214 120 lat = -0.0044966080157459 lon = 0.0077883535850179 150 lat = -0.0077883535609834 lon = 0.0044966080572905 180 lat = -0.0089932160591873 lon = 0 210 lat = -0.0077883535609834 lon = -0.0044966080572905 240 lat = -0.0044966080157459 lon = -0.0077883535850179 270 lat = -1.6520269823552E-18 lon = -0.008993216059214 300 lat = 0.0044966080157459 lon = -0.0077883535850179 330 lat = 0.0077883535609834 lon = -0.0044966080572905
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 0 lat = 0.0089932160591873 lon = 0 30 lat = 0.0077883535609834 lon = 0.0044966080572905 60 lat = 0.0044966080157459 lon = 0.0077883535850179 90 lat = 5.5067566078507E-19 lon = 0.008993216059214 120 lat = -0.0044966080157459 lon = 0.0077883535850179 150 lat = -0.0077883535609834 lon = 0.0044966080572905 180 lat = -0.0089932160591873 lon = 0 210 lat = -0.0077883535609834 lon = -0.0044966080572905 240 lat = -0.0044966080157459 lon = -0.0077883535850179 270 lat = -1.6520269823552E-18 lon = -0.008993216059214 300 lat = 0.0044966080157459 lon = -0.0077883535850179 330 lat = 0.0077883535609834 lon = -0.0044966080572905
preferences:
225.4 ms | 403 KiB | 300 Q