Php和javascript在本地主机上工作，但不在托管网站上工作

我实现了一个具有3个下拉标签的搜索表单 前两个下拉列表具有静态选项，而我使用javascript创建了第三个下拉列表的选项。javascript基于第二个下拉列表中的

onchange

事件，存储在

searchideas.js

文件中

这个

searchideas.js

文件通过

XMLHttpRequest

使用

GET

方法调用

datasupplier.php

。所有这些都可以在我的本地主机上正常工作，但当我在live网站上托管它时，第三个下拉列表的选项不会生成

xmlhttp.readyState

变为

4

，但

xmlhttp.status

变为

500

，对应于内部服务器错误

我还将

searchideas.js

和

datasupplier.php

移动到包含下拉列表的网页所在的文件夹中，但没有任何效果

我怎样才能克服这个错误

我的

searchideas.js

是：

function searchideas( )
{
    var state = document.getElementById("stateID").value; 
    var county = document.getElementById("countyID").value; 
    var town = document.getElementById("townID").value;
    var xmlhttp;
    if (window.XMLHttpRequest)
    {
        xmlhttp=new XMLHttpRequest();
    }
    else
    {
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
    xmlhttp.onreadystatechange=function()
    {        
        if (xmlhttp.readyState==4 && xmlhttp.status==200)
        {
            var selectList = document.getElementById('townID');
            var val = xmlhttp.responseText; 
            var jsonData = JSON.parse(val); 
            for (var i in jsonData) 
            {
              var option = document.createElement('option');
              option.value = "http://www.mywebsite.com" + i;
              option.text = jsonData[i];
              selectList.appendChild(option);
            }
        }   
    } 
    var url = "http://www.mywebsite.com/sites/all/themes/danland/datasupplier.php?stateID=" + state + "&countyID=" + county + "&townID=" + town;    
    xmlhttp.open("GET",url,true);
    xmlhttp.send();
}

<?php 

$stateID = $_GET['stateID'];
$countyID = $_GET['countyID'];
$townID = $_GET['townID'];

$states = array();
$states['SC'] = "Stories";
$states['TL'] = "Novels";
$counties = array();
$counties['SC']['PRACT'] = 'By Interest';
$counties['SC']['SERV'] = 'By Choice';
$counties['TL']['PRACT'] = 'By Interest';
$counties['TL']['SERV'] = 'By Choice';

$towns = array();
$towns['SC']['PRACT']['/index.php?q=sc%3Fpract%3Ffai'] = "Fairy Tale";
$towns['SC']['PRACT']['/index.php?q=sc%3Fpract%3Fedu'] = "Education";
$towns['SC']['SERV']['/index.php?q=sc%3Fserv%3Ffic'] = "Fiction";

$towns['TL']['PRACT']['/index.php?q=tl%3Fpract%3Fzom'] = "Zombie";
$towns['TL']['PRACT']['/index.php?q=tl%3Fpract%3Fedu'] = "Education";
$towns['TL']['SERV']['/index.php?q=tl%3Fserv%3Fsal'] = "Sales";
$towns['TL']['SERV']['/index.php?q=tl%3Fserv%3Fstr'] = "Strategy";



if($stateID && !$countyID && !$townID)
{
    echo json_encode( $counties[$stateID] );
} 
elseif( $stateID && $countyID && !$townID ) 
{
    echo json_encode( $towns[$stateID][$countyID] );
}
elseif( isset($villages[$stateID][$countyID][$townID]) ) 
{
    echo json_encode( $villages[$stateID][$countyID][$townID] );
} 
else 
{
    echo '{}';
}

?>

我的

datasupplier.php

是：

function searchideas( )
{
    var state = document.getElementById("stateID").value; 
    var county = document.getElementById("countyID").value; 
    var town = document.getElementById("townID").value;
    var xmlhttp;
    if (window.XMLHttpRequest)
    {
        xmlhttp=new XMLHttpRequest();
    }
    else
    {
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
    xmlhttp.onreadystatechange=function()
    {        
        if (xmlhttp.readyState==4 && xmlhttp.status==200)
        {
            var selectList = document.getElementById('townID');
            var val = xmlhttp.responseText; 
            var jsonData = JSON.parse(val); 
            for (var i in jsonData) 
            {
              var option = document.createElement('option');
              option.value = "http://www.mywebsite.com" + i;
              option.text = jsonData[i];
              selectList.appendChild(option);
            }
        }   
    } 
    var url = "http://www.mywebsite.com/sites/all/themes/danland/datasupplier.php?stateID=" + state + "&countyID=" + county + "&townID=" + town;    
    xmlhttp.open("GET",url,true);
    xmlhttp.send();
}

<?php 

$stateID = $_GET['stateID'];
$countyID = $_GET['countyID'];
$townID = $_GET['townID'];

$states = array();
$states['SC'] = "Stories";
$states['TL'] = "Novels";
$counties = array();
$counties['SC']['PRACT'] = 'By Interest';
$counties['SC']['SERV'] = 'By Choice';
$counties['TL']['PRACT'] = 'By Interest';
$counties['TL']['SERV'] = 'By Choice';

$towns = array();
$towns['SC']['PRACT']['/index.php?q=sc%3Fpract%3Ffai'] = "Fairy Tale";
$towns['SC']['PRACT']['/index.php?q=sc%3Fpract%3Fedu'] = "Education";
$towns['SC']['SERV']['/index.php?q=sc%3Fserv%3Ffic'] = "Fiction";

$towns['TL']['PRACT']['/index.php?q=tl%3Fpract%3Fzom'] = "Zombie";
$towns['TL']['PRACT']['/index.php?q=tl%3Fpract%3Fedu'] = "Education";
$towns['TL']['SERV']['/index.php?q=tl%3Fserv%3Fsal'] = "Sales";
$towns['TL']['SERV']['/index.php?q=tl%3Fserv%3Fstr'] = "Strategy";



if($stateID && !$countyID && !$townID)
{
    echo json_encode( $counties[$stateID] );
} 
elseif( $stateID && $countyID && !$townID ) 
{
    echo json_encode( $towns[$stateID][$countyID] );
}
elseif( isset($villages[$stateID][$countyID][$townID]) ) 
{
    echo json_encode( $villages[$stateID][$countyID][$townID] );
} 
else 
{
    echo '{}';
}

?>

---

由于文件权限问题，我与您遇到了相同的问题，将权限从

755

更改为

644

有效。如果您的权限与权限相关，请尝试将

datasupplier.php

的权限设置为

644