PHP Tencent map longitude and latitude to Baidu map longitude and latitude
Release： 2016-07-25 08:42:33
Original
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- /**
- * China’s normal GCJ02 coordinates---->Baidu Map BD09 coordinates
- * Tencent Maps also uses GCJ02 coordinates
- * @param double $lat latitude
- * @param double $lng longitude
- */
- function Convert_GCJ02_To_BD09($lat,$lng){
- $x_pi = 3.14159265358979324 * 3000 $$0 / $y =
- ; z =sqrt($x * $x + $y * $y) + 0.00002 * sin($y * $x_pi);
- $theta = atan2($y, $x) + 0.000003 * cos($x * $x_pi) ;
- $lng = $z * cos($theta) + 0.0065;
- $lat = $z * sin($theta) + 0.006;
- return array('lng'=>$lng,'lat'=> $lat);
- }
-
- /**
- * Baidu Map BD09 coordinates ---->China’s normal GCJ02 coordinates
- * Tencent Maps also uses GCJ02 coordinates
- * @param double $lat latitude
- * @param double $lng longitude
- * @return array();
- */
- function Convert_BD09_To_GCJ02($lat,$lng){
- $x_pi = 3.14159265358979324 * 3000.0 / 180.0;
- $x = $lng - 0.0065;
- $y = $lat - 0.006;
- $z = sqrt($x * $x + $y * $y) - 0.00002 * sin($y * $x_pi);
- $theta = atan2($y, $x) - 0.000003 * cos($x * $x_pi);
- $lng = $z * cos($theta);
- $lat = $z * sin($theta);
- return array('lng'=>$lng,'lat '=>$lat);
- }
-
-
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