我正在使用下拉列表创建一个搜索表单，以允许用户在三种搜索类型之间进行选择：
- 按名字
- 通过专业化
- 按位置
真正发生的是选择查询或搜索表单不显示任何结果。它仅适用于按名称查询而不使用任何其他类型
我的问题是如何区分这三种类型，或者如果用户没有选择下拉列表，如何禁用它？
搜索.php
<?php
session_start();
if($_SESSION['login'] != 'true'){
header("location:index.php");
}
$login = ($_SESSION['login']);
$userid = ($_SESSION['user_id']);
$login_user = ($_SESSION['username']);
$fname = ($_SESSION['first_name']);
$lname = ($_SESSION['last_name']);
$sessionaddres =($_SESSION['address']);
require_once('for members/scripts/connect.php');
// function for selecting names
function nameQuery(){
$nameData = mysql_query("SELECT * FROM user") or die("could select database");
while($record = mysql_fetch_array($nameData)){
echo'<option value="' . $record['user_name'] . '">' . $record['user_name'] . '</option>';
}
}
// function for select by specialization
function specializationQuery(){
$specData = mysql_query("SELECT * FROM specialization");
while($recordJob = mysql_fetch_array($specData)){
echo'<option value="' . $recordJob['specialization_name'] . '">' . $recordJob['specialization_name'] . '</option>';
}
}
if(isset($_POST['search']))
{
$Sgov = $_POST['governorate'];
@$Sdist = $_POST['district'];
@$Svillage = $_POST['village'];
// query search by name
if(isset($_POST['name']))
{
$Sname =$_POST['name'];
$sql = mysql_query("SELECT first_name, last_name, profile_pic FROM user WHERE user_name ='$Sname'")or die(mysql_error());
if($sql)
{
while($getrow = mysql_fetch_array($sql))
{
$firstname = $getrow['first_name'];
$lastname = $getrow['last_name'];
$profilepic = $getrow['profile_pic'];
if($profilepic == "")
{
$profile_pic = "images/default_img.jpg";
}
else
{
$profile_pic = "userdata/profile_pics/".$profilepic;
}
echo "<ul>
<li>
".$firstname. " ".$lastname ."
</li>
<li>
<img style='width:80px' src='".$profile_pic . "'>
</li>
</ul>";
}
}
else
{
echo "their was no result!!!!";
}
}
}
// search by specialization
if(isset($_POST['specialization']))
{
$Sspec = $_POST['specialization'];
$sql = mysql_query(" SELECT first_name, last_name, profile_pic FROM user WHERE specialization = '$Sspec'")or die(mysql_error());
if($sql)
{
while($getrow = mysql_fetch_array($sql))
{
$firstname = $getrow['first_name'];
$lastname = $getrow['last_name'];
$profilepic = $getrow['profile_pic'];
if($profilepic == "")
{
$profile_pic = "images/default_img.jpg";
}
else
{
$profile_pic = "userdata/profile_pics/".$profilepic;
}
echo "<ul>
<li>
".$firstname. " ".$lastname ."
</li>
<li>
<img style='width:80px' src='".$profile_pic . "'>
</li>
</ul>";
}
}
else
{
echo "their was no result!!!!";
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>search page</title>
<link href="style/stylesheet.css" rel="stylesheet" type="text/css" />
<script type = "text/javascript" src = "http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("select#district").attr("disabled","disabled");
$("select#village").attr("disabled","disabled");
$("select#governorate").change(function(){
$("select#district").attr("disabled","disabled");
$("select#district").html("<option>wait...</option>");
var id = $("select#governorate option:selected").attr('value');
$.post("select_district.php", {id:id}, function(data){
$("select#district").removeAttr("disabled");
$("select#district").html(data);
});
});
$("select#district").change(function(){
id = $(this).val();
$("select#village").attr("disabled","disabled");
$("select#village").html("<option>wait...</option>");
$.post("select_village.php", {id:id}, function(data){
$("select#village").removeAttr("disabled");
$("select#village").html(data);
});
});
$("form#registerform").submit(function(){
var cat = $("select#governorate option:selected").attr('value');
var type = $("select#district option:selected").attr('value');
var village = $("select#village option:selected").attr('value');
});
});
</script>
</head>
<body>
<div class="container">
<!--<?php require_once('header.php'); ?>-->
<br />
<br />
<br />
<br />
<!-- <?php require_once('leftsideBar2.php'); ?>-->
<div id="search-title">Search section</div>
<div id="search-form">
<?php include "select.class.php"; ?>
<form action="search.php" method="post">
Search By Name:<br />
<select name="name" >
<?php nameQuery(); ?>
<option id="0">-- select By UserName --</option>
</select>
<br/><br/>
Search By Governorate:<br />
<select id="governorate" name = 'governorate'>
<?php echo $opt->ShowGovernorate(); ?>
</select>
<br /><br/>
Search by District:<br />
<select id="district" name="district">
<option value="0">choose...</option>
</select>
<br /><br/>
Search by Cities:<br />
<select id="village" name="village">
<option value="0">choose...</option>
</select>
<br /><br/>
Search By Specialization:<br />
<select name="specialization">
<option id="0" disabled="disabled">-- select Job --</option>
<?php specializationQuery(); ?>
</select>
<input type="submit" name="search" value="Search" />
</form>
</div>
</div>
<?php require_once('footer.php'); ?>
</body>
</html>