PHP实现腾讯与百度坐标转换

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'=>$ga,'Longitude'=>$gb];

}

public function coordinate_switchf($a,$b){//腾讯转百度坐标转换


  $x = (double)$b ;
  $y = (double)$a;
  $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)   0.0065,6);
  $ga = number_format($z * sin($theta)   0.006,6);


  return ['Latitude'=>$ga,'Longitude'=>$gb];

}