Question

您好我有一个搜索页面，其中包含下拉菜单，文本字段和提交按钮。下拉菜单有三个项目，一个是Property ID，Property Deal Type，第三个是Property Status。

我希望用户选择这三个中的任何一个并从下拉到文本框中输入所选项目的文本，然后按下按钮并将其搜索到数据库中，但不幸的是我创建的查询列出了所有记录

问题出在哪里？

这是我的代码：

<html>
<head>
</head>
<body>
<form action="" method="post">
<table width="1330" border="0" align="center" bordercolor="#000000">
  <th colspan="13"><font size="+3">Search Page</font></th></tr>
<tr><th colspan="13">
<select name="searchbox" class="dropdown">
<option value="" selected disabled>Search Criteria</option>
<option value="PropertyID">Search By ID</option>
<option value="PropertyDealType">Search By DealType</option>
<option value="PropertyStatus">Search By Status</option>
</select>
<input type="text" name="searchtext" class="search">
&nbsp;
<input type="submit" id="Submitbutton" value="Search"><br >

<?php 

require_once('../db.php');
@$searchtext = $_POST['searchtext'];

$query = "SELECT 
     properties.PropertyID,
     properties.PropertyType,
     properties.PropertyDealType,
     properties.PropertyStatus,

     remoteemployees.RemoteEmployeeFullName,

     propertyowners.PropertyOwnerName,
     propertydealers.PropertyDealerName

     FROM remoteemployees,
          propertyowners,
          propertydealers,
          properties

     WHERE 

     properties.PropertyOwnerID=propertyowners.PropertyOwnerID

     AND properties.PropertyDealerID=propertydealers.PropertyDealerID

     AND remoteemployees.RemoteEmployeeEmail=properties.RemoteEmployeeEmail

     OR   properties.PropertyDealType = '$searchtext'

     OR   properties.PropertyID = '$searchtext'

     OR   properties.PropertyStatus = '$searchtext'";

    $query_run = $connection->query($query);
      if($query_run->num_rows == 0)
  {
      exit();
  } ?>


  </th></tr>
<tr><th>PropertyID</th><th>Property Type</th><th>Property Deal Type</th><th>Property Owner</th><th>Property Dealer</th>
<th>Remote Emp Name</th><th>Property Status</th><th>Active</th><th>Inactive</th>
</tr>
<?php
    if( $connection->error ) exit( $connection->error );
    while($row=$query_run->fetch_assoc()) 
    {

?>

<tr><td><?php echo $row['PropertyID'] ?></td><td><?php echo $row['PropertyType'] ?></td><td><?php echo $row['PropertyDealType'] ?></td><td><?php echo $row['PropertyOwnerName'] ?></td><td><?php echo $row['PropertyDealerName'] ?></td>
<td><?php echo $row['RemoteEmployeeFullName'] ?></td><td><?php echo $row['PropertyStatus'] ?></td><td><a href="Property active Page execution.php?PropertyID=<?php echo $row['PropertyID']  ?>">Active Property</a></td><td><a href="Property Inactive Page execution.php?PropertyID=<?php echo $row['PropertyID']  ?>">Inactive Property</a></td>
</tr>
<?php } ?>

</table>
</form>


</body>
</html>

Answer 1

试试这个，

$query = "SELECT 
         properties.PropertyID,
         properties.PropertyType,
         properties.PropertyDealType,
         properties.PropertyStatus,

         remoteemployees.RemoteEmployeeFullName,

         propertyowners.PropertyOwnerName,
         propertydealers.PropertyDealerName

         FROM remoteemployees,
              propertyowners,
              propertydealers,
              properties

         WHERE 

         properties.PropertyOwnerID=propertyowners.PropertyOwnerID

                AND properties.PropertyDealerID=propertydealers.PropertyDealerID

                AND remoteemployees.RemoteEmployeeEmail=properties.RemoteEmployeeEmail

                AND   ( properties.PropertyDealType = '$searchtext'

                        OR   properties.PropertyID = '$searchtext'

                        OR   properties.PropertyStatus = '$searchtext'");

Answer 2

修改您的查询

$query = "SELECT 
     properties.PropertyID,
     properties.PropertyType,
     properties.PropertyDealType,
     properties.PropertyStatus,

     remoteemployees.RemoteEmployeeFullName,

     propertyowners.PropertyOwnerName,
     propertydealers.PropertyDealerName

     FROM remoteemployees,
          propertyowners,
          propertydealers,
          properties

     WHERE 

     properties.PropertyOwnerID=propertyowners.PropertyOwnerID

     AND properties.PropertyDealerID=propertydealers.PropertyDealerID

     AND remoteemployees.RemoteEmployeeEmail=properties.RemoteEmployeeEmail

     OR   properties.{$_POST['searchbox']} = '$searchtext'";

因为您将从下拉列表中收到字段名称，所以只需使用它即可。有意地，您应该使用表JOINS而不是从具有条件的多个表中进行选择。还应该在字符串比较中使用LIKE关键字。

从一个框和一个文本文件中检索数据

2 个答案: