将经度和纬度存储到数据库的问题

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【中文标题】将经度和纬度存储到数据库的问题【英文标题】：Problems with storing longitude and latitude to databse 【发布时间】：2016-05-29 04:25:54 【问题描述】：

我正在尝试将经纬度坐标存储到数据库中。

以下代码成功将用户名写入数据库，但经纬度为空。

任何想法我做错了什么？

谢谢

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
 <head>
  <title>Locate skills Reg</title>
  <style>
#header 
    background-color:black;
    color:white;
    text-align:center;
    padding:5px;

#side 
    line-height:30px;
    background-color:white;
    height:500px;
    width:250px;
    float:left;
    padding:5px;          

#main 
    width:350px;
    float:left;
    padding:10px;        

#aside 
    width:250px;
    float:right;
    padding:5px;

#footer 
    background-color:black;
    color:white;
    clear:both;
    text-align:center;
   padding:5px;      

</style>
 </head>
 <body>

 <div id="header">
  <h1>Location/Skill Register</h1>
  <?php
                    session_start();
                    $username = $_SESSION['username'];

                    if($_SESSION['name'])
                    
                        echo "Welcome, <a href='userProfile.php'>" .$_SESSION['login']."
                        &nbsp</a>&nbsp | <a href = 'logout.php'>Log Out!</a>";
                    
                    else
                    

                        echo '<script type="text/javascript">'; 
                        echo 'alert("You must be logged in to do that!");'; 
                        echo 'window.location.href = "login.html";';
                        echo '</script>';
                        //echo "<a href = 'login.html'>Login</a> | <a href = 'register.php'>Register</a>";
                    

                    ?>

 </div>
<br>
<div id="side">
<a href="homepage.php">
<img src="logo.png"  style="width:200px;height:200px;border:0;"><br>
Donate an Item Here<br>
<a href = "alldonations.php">List of donations<br>
<a href = "requestList.php">Request for Items</a><br>
List of requested Items<br>
My Account Posts<br>
<a href = "feedback.php">Feedback</a><br>
<br>
</div>
<div id="main">

<table frame="border"  valign="center" align ="center">         
  <form action ="locateskills.php" method ="POST" >

        <td><input type="hidden" id = "latitude"  name="latitude"/></td>                   
        <td><input type="hidden" id="longitude" name="longitude"/></td>
        <tr><td>Please enter description of skill your are providing or requesting for: </br>
        <textarea rows="4" cols="50" name = "description"></textarea></td></tr>
       <br />
       </td><td align="right"><input type= "submit" onclick="getLocation()" name = "submit" value="submit"></td></tr>
                </b></font>

</form>
</table>
       <br/>

<Script>

function getLocation() 

    if (navigator.geolocation)
    
        navigator.geolocation.getCurrentPosition(showPosition);
     
    else 
    
        alert("Geolocation Failed!");
    


function showPosition(position) 

      x.innerHTML = "Latitude: " + position.coords.latitude + 
    "<br>Longitude: " + position.coords.longitude;

  latitude = position.coords.latitude;
  longitude = position.coords.longitude;
  document.getElementById("latitude").value = String(latitude);
  document.getElementById("longitude").value = String(longitude);

</Script>

</body>
</html>

<?php

session_start();
$submit = $_POST['submit'];
$username = $_SESSION['login'];
$latitude = $_POST['latitude'];
$longitude = $_POST['longitude'];

$connect = mysql_connect('HOST', 'USER', 'PASS') or die('Failed to connect!');
mysql_select_db('DB') or die('Can\'t find Database!');

if($submit)
                   
    mysql_query("INSERT INTO LOCATIONS VALUES ('$username', '$latitude', '$longitude')");
    echo '<script type="text/javascript">'; 
    echo 'alert("Stored to Database");'; 
    echo 'window.location.href = "homepage.php";';
    echo '</script>';




//close once finished to free up resources
  $db->close();

?>

【问题讨论】：

你能给出你试图插入数据的数据库表的定义吗？ 【参考方案1】：

试试这个：

    <!DOCTYPE html>

<html>
 <head>
  <title>Locate skills Reg</title>
  <style>
#header 
    background-color:black;
    color:white;
    text-align:center;
    padding:5px;

#side 
    line-height:30px;
    background-color:white;
    height:500px;
    width:250px;
    float:left;
    padding:5px;          

#main 
    width:350px;
    float:left;
    padding:10px;        

#aside 
    width:250px;
    float:right;
    padding:5px;

#footer 
    background-color:black;
    color:white;
    clear:both;
    text-align:center;
   padding:5px;      

</style>
 </head>
 <body>

 <div id="header">
  <h1>Location/Skill Register</h1>
  <?php
                    session_start();
                    $username = $_SESSION['username'];

                    if($_SESSION['name'])
                    
                        echo "Welcome, <a href='userProfile.php'>" .$_SESSION['login']."
                        &nbsp</a>&nbsp | <a href = 'logout.php'>Log Out!</a>";
                    
                    else
                    

                        echo '<script type="text/javascript">'; 
                        echo 'alert("You must be logged in to do that!");'; 
                        echo 'window.location.href = "login.html";';
                        echo '</script>';
                        //echo "<a href = 'login.html'>Login</a> | <a href = 'register.php'>Register</a>";
                    

                    ?>

 </div>
<br>
<div id="side">
<a href="homepage.php">
<img src="logo.png"  style="width:200px;height:200px;border:0;"><br>
Donate an Item Here<br>
<a href = "alldonations.php">List of donations<br>
<a href = "requestList.php">Request for Items</a><br>
List of requested Items<br>
My Account Posts<br>
<a href = "feedback.php">Feedback</a><br>
<br>
</div>
<div id="main">

<table frame="border"  valign="center" align ="center">         
  <form action ="locateskills.php" method ="POST" id="locationForm">
        <td><input type="hidden" id = "latitude"  name="latitude"/></td>                   
        <td><input type="hidden" id="longitude" name="longitude"/></td>
        <tr><td>Please enter description of skill your are providing or requesting for: </br>
        <textarea rows="4" cols="50" name = "description"></textarea></td></tr>
       <br />
       </td><td align="right"><input type="button" onclick="getLocation()" value="submit"></td></tr>
                </b></font>

</form>
</table>
       <br/>

<script>

function getLocation() 

    if (navigator.geolocation)
    
        navigator.geolocation.getCurrentPosition(showPosition);
     
    else 
    
        alert("Geolocation Failed!");
    


function showPosition(position) 

    //   x.innerHTML = "Latitude: " + position.coords.latitude + 
    // "<br>Longitude: " + position.coords.longitude;

  latitude = position.coords.latitude;
  longitude = position.coords.longitude;
  document.getElementById("latitude").value = String(latitude);
  document.getElementById("longitude").value = String(longitude);
  document.getElementById("locationForm").submit();

</script>

</body>
</html>

<?php

session_start();
$submit = $_POST['submit'];
$username = $_SESSION['login'];
$latitude = $_POST['latitude'];
$longitude = $_POST['longitude'];

$connect = mysql_connect('HOST', 'USER', 'PASS') or die('Failed to connect!');
mysql_select_db('DB') or die('Can\'t find Database!');

if($submit)
                   
    mysql_query("INSERT INTO LOCATIONS VALUES ('$username', '$latitude', '$longitude')");
    echo '<script type="text/javascript">'; 
    echo 'alert("Stored to Database");'; 
    echo 'window.location.href = "homepage.php";';
    echo '</script>';




//close once finished to free up resources
  $db->close();

?>

*在回调带有坐标之前提交表单，所以我将提交按钮更改为普通按钮并在回调中提交表单。

【讨论】：

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