PHP实现腾讯与百度坐标转换

废话不多说，直接上代码

public function coordinate_switch($a,$b){//百度转腾讯坐标转换

$x = (double)$b – 0.0065;
$y = (double)$a – 0.006;
$x_pi = 3.14159265358979324;
$z = sqrt($x * $x $y * $y) – 0.00002 * sin($y * $x_pi);

$theta = atan2($y,$x) – 0.000003 * cos($x*$x_pi);

$gb = number_format($z * cos($theta),15);
$ga = number_format($z * sin($theta),15);

return [Latitude=