如何在php和html中使用gps显示动态路径

Question

我正在用php和html-5开发一个网站，我的计划是在给定的JPEG图像上显示两个位置之间的动态路径，我们如何才能做到这一点，我不知道如何使用GPS系统与网站，我需要一些帮助。

谢谢

Answer 1

这里有一篇不错的文章：

http://merged.ca/iphone/html5-geolocation

if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition( 

    function (position) {  

    // Did we get the position correctly?
    // alert (position.coords.latitude);

    // To see everything available in the position.coords array:
    // for (key in position.coords) {alert(key)}

    alert(position.coords.latitude + ',' + position.coords.longitude);

    }, 
    // next function is the error callback
    function (error)
    {
        switch(error.code) 
        {
            case error.TIMEOUT:
                alert ('Timeout');
                break;
            case error.POSITION_UNAVAILABLE:
                alert ('Position unavailable');
                break;
            case error.PERMISSION_DENIED:
                alert ('Permission denied');
                break;
            case error.UNKNOWN_ERROR:
                alert ('Unknown error');
                break;
        }
    }
    );
}

}

Answer 2

查看这篇W3Schools文章：http://www.w3schools.com/html/html5_geolocation.asp

if(!navigator.geolocation){
  //the browser does not support geolocation
}else{
  (function getPosition(){
    navigator.geolocation.getCurrentPosition(
      function (position){
        //use the coordinates
        balloon.style.left = (position.coords.latitude - latMin) * latScale;
        balloon.style.top = (position.coords.longitude - longMin) * longScale;
        //requery the position after a set time
        setTimeout(getPosition,1000);
      }
    )
  })()
}