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Convert Tencent map longitude and latitude to Baidu map longitude and latitude PHP class
<?php
function Convert_GCJ02_To_BD09($lat,$lng){
$x_pi = 3.14159265358979324 * 3000.0 / 180.0;
$x = $lng;
$y = $lat;
$z =sqrt($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);
}
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);
}
?>China's normal GCJ02 coordinates---->Baidu map BD09 coordinates
Tencent map also uses GCJ02 coordinates
@param double $lat latitude
@ param double $lng Longitude
Baidu map BD09 coordinates---->China normal GCJ02 coordinates
Tencent map also uses GCJ02 coordinates
@param double $lat latitude
@param double $lng longitude
@return array();
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