与mysql交互的html下拉菜单

我最近在我的网站的index.php中更改了我的代码，现在mysql下拉菜单不起作用。它把我带回到主页，而不是mysql中表的其他页面。我最有可能删除了一些东西，但我不确定是什么。这里是我的index.php的html代码：与mysql交互的html下拉菜单

<form method="post" action="http://www.450s.co/index.php"> 
 
    <table border="0" width="100%"> 
 
     <tbody> 
 
      <tr> 
 
       <td> 
 
        <p style="font-family: 'Arial'; color: black;">Select your town/city:</p> 
 
        <select id="change_city" name="city" class="dropdown-style center"> 
 
         <option value="24">Bedfordshire</option> 
 
         <option value="46">Buckinghamshire</option> 
 
         <option value="5" selected="">Greater London</option> 
 
         <option value="39">Hertfordshire</option> 
 
         <option value="44">Lincolnshire</option> 
 
         <option value="45">Northamptonshire</option> 
 
         <option value="47">Nottinghamshire</option> 
 
         <option value="23">Oxfordshire</option> 
 
         <option value="42">Reigate</option> 
 
         <option value="41">Slough</option> 
 
         <option value="40">St Albans</option> 
 
        </select> 
 
       </td> 
 
      </tr> 
 
      <tr> 
 
       <td> 
 
        <p style="font-family: arial; color: black;">Select your postcode:</p> 
 
        <select name="code" id="change_postcode" class="dropdown-style"> 
 
         <option value="1">BR - Bromley</option> 
 
         <option value="2">CR - Croyden</option> 
 
         <option value="3">DA - Dartford</option> 
 
         <option value="4">E - East London</option> 
 
         <option value="5">EC - City of London</option> 
 
         <option value="6">EN - Enfield</option> 
 
         <option value="7">HA - Harrow</option> 
 
         <option value="8">IG - Ilford</option> 
 
         <option value="9">KT - Kingston upon Thames</option> 
 
         <option value="10">N - North London</option> 
 
         <option value="11">NW - North West London</option> 
 
         <option value="12">RM - Romford</option> 
 
         <option value="13">SE - South East London</option> 
 
         <option value="14">SM - Sutton</option> 
 
         <option value="15">SW - South West London</option> 
 
         <option value="16">TW - Twickenham</option> 
 
         <option value="17">UB - Southall</option> 
 
         <option value="18">W - West End</option> 
 
         <option value="19">WC - West Central</option> 
 
         <option value="20">WD - Watford</option> 
 
        </select> 
 
       </td> 
 
      </tr> 
 
      <tr> 
 
       <td> 
 
        <p style="font-family: arial; color: black;">Select your trade:</p> 
 
        <select name="cat" class="dropdown-style center"> 
 
         <option value="1">Aerials</option> 
 
         <option value="2">Air Conditioning</option> 
 
         <option value="3">Airport Transfers</option> 
 
         <option value="58">Architectural Services</option> 
 
         <option value="4">Auto Electricians</option> 
 
         <option value="5">Bathrooms</option> 
 
         <option value="6">Beauty Salons</option> 
 
         <option value="7">Bedrooms</option> 
 
         <option value="8">Blinds and Curtains</option> 
 
         <option value="9">Boilers</option> 
 
         <option value="10">Brake and Clutch</option> 
 
         <option value="11">Builders</option> 
 
         <option value="12">Burglar Alarms</option> 
 
         <option value="13">Car Body Repairs</option> 
 
         <option value="14">Car Hire</option> 
 
         <option value="15">Carpenters</option> 
 
         <option value="16">Carpet Cleaning</option> 
 
         <option value="17">Carpet Fitting</option> 
 
         <option value="18">Central Heating</option> 
 
         <option value="20">Chiropodists</option> 
 
         <option value="51">Chiropractors</option> 
 
         <option value="22">Cleaning Services</option> 
 
         <option value="59">Conservatories</option> 
 
         <option value="61">Damp Proofing</option> 
 
         <option value="23">Domestic Appliance Repair</option> 
 
         <option value="24">Double Glazing</option> 
 
         <option value="25">Drains</option> 
 
         <option value="62">Driveways</option> 
 
         <option value="26">Electricians</option> 
 
         <option value="49">Estate Agents</option> 
 
         <option value="27">Exhausts</option> 
 
         <option value="63">Fascias, Soffits &amp; Guttering</option> 
 
         <option value="28">Fencing</option> 
 
         <option value="50">Flooring</option> 
 
         <option value="29">Garage Doors</option> 
 
         <option value="30">Garage Services</option> 
 
         <option value="33">Gardeners &amp; Landscapers</option> 
 
         <option value="31">Gas Engineers</option> 
 
         <option value="32">Guttering</option> 
 
         <option value="65">Handyman</option> 
 
         <option value="54">Health &amp; Beauty</option> 
 
         <option value="57">Hearing Aids</option> 
 
         <option value="34">Kitchens</option> 
 
         <option value="35">Locksmiths</option> 
 
         <option value="36">M.O.T</option> 
 
         <option value="56">Mobility</option> 
 
         <option value="55">Optitions</option> 
 
         <option value="37">Painters and Decorators</option> 
 
         <option value="38">Paving Contractors</option> 
 
         <option value="39">Pest Control</option> 
 
         <option value="40">Plasterers</option> 
 
         <option value="41">Plumbers</option> 
 
         <option value="42">Removals and Storage</option> 
 
         <option value="43">Roofing</option> 
 
         <option value="64">Sheds</option> 
 
         <option value="44">Skip Hire</option> 
 
         <option value="66">Tiling</option> 
 
         <option value="45">Tree Services</option> 
 
         <option value="46">Tyres and Exhausts</option> 
 
         <option value="47">Vets</option> 
 
         <option value="53">Website Design</option> 
 
         <option value="48">Wills &amp; Probate</option> 
 
         <option value="60">Windows</option> 
 
        </select> 
 
       </td> 
 
      </tr> 
 
      <tr> 
 
       <td> 
 
        <p> 
 
         <input type="submit" name="submit" value="GET MY DISCOUNT" class="standard-button"></p> 
 
       </td> 
 
      </tr> 
 
     </tbody> 
 
    </table> 
 
</form>

和PHP代码：

<?php 

include('mysql.php'); 
include('template/header.php'); 

$city = str_replace('-', ' ', $_GET['city']); 

$result = $sql->sql_query("SELECT * FROM city WHERE city LIKE '%".$city."%' LIMIT 1"); 
$row = $sql->sql_fetch($result); 

$code = explode('--', $_GET['code']); 
$result2 = $sql->sql_query("SELECT * FROM postcode WHERE code = '".$code[0]."' LIMIT 1"); 
$row2 = $sql->sql_fetch($result2); 

if(isset($row['id'])){ 
?> 
<p class="abc1" style="font-family:'Arial';">Services in <?php echo  $row2['name']; ?>, <?php echo $row['city']; ?></p> 
<ul class="list-unstyled"> 
<?php 
$result3 = $sql->sql_query("SELECT * FROM pages WHERE city_id = '".$row['id']."' AND postcode = '".$row2['id']."'"); 
while($row3 = $sql->sql_fetch($result3)){ 

    $result4 = $sql->sql_query("SELECT * FROM cats WHERE id =  '".$row3['cat_id']."' LIMIT 1"); 
$row4 = $sql->sql_fetch($result4); 

$one = str_replace(' ', '-', $row['city']); 
$two = str_replace(' ', '-', $row2['name']); 
$three = str_replace(' ', '-', $row4['name']); 
$url = strtolower($one).'/'.$row2['code'].'--'.strtolower($two).'/'.strtolower($three).'/'; 
echo '<li class="list-link"><a href="http://www.450s.co/'.$url.'">'.$row4['name'].' in '.$row2['name'].', '.$row['city'].'</A></li>'; 
} 
?>

来源

2015-12-17 E.B

我认为有一些PHP将在表单提交后重定向？表单提交选定的值确定，所以它不清楚你的问题，问题出在哪里 – RamRaider

请发表php代码 – ClaudioM

如果没有php处理服务器上的表单，html是无用的。 –

你的表单动作说：

<form method="post" action="http://www.450s.co/index.php">

但你的PHP是正在寻找$_GET['city']

你可能需要改变窗体的方法是这样的：

<form method="get" action="http://www.450s.co/index.php">

要不然你需要做一个搜索和替换$_GET与PHP页面中$_POST更换。

来源

2015-12-17 17:28:17 starshine531

它改变了这个网址，但仍然把我带到主页'http://www.450s.co/index.php?city=5&code=1&cat=1&submit=GET+MY+DISCOUNT' –

哪个页面包含php代码？是它的index.php？如果没有，你需要改变你的表单动作是页面有php代码。我看着你的页面，它看起来像去了page.php而不是index.php。如果这是php代码驻留的地方，那么你的表单标签需要如下所示：'

与mysql交互的html下拉菜单

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