如何在索引部分找到相关类别？

Question

我开发了一个头部不同的头部，这些头部像这样下拉，如图所示

现在所有负责人都有单独的数据库表，用于连接更多下拉列表，所有表格都有相同的属性名称，即id和类别

现在我想要当我选择任何下拉值并且该值等于数据库行应该在索引页面上显示的post表属性标签时，这里是我的代码

<?if(isset($_GET['cat']))
 {
     $cat_name=$_GET['cat'];
     $c_query="select * from private ,goverment,others,location,qaulification,company where category=$cat_name";
     $con=mysqli_connect("localhost","root","","joboard");
     $c_run=mysqli_query($con,$c_query);
     $c_row=mysqli_fetch_array($c_run);
     $c_name=$c_row['category'];
 }
 ?>

                                                

所有工作委员会按日期排序

                                

            if(isset($_POST['submitSearch']))
            {
                $search=$_POST['search'];
                $query  = "select * from posts where status='publish'";
                $query.=" and tags like '%$search%'";
                $query.="order by id desc";
            }
            else
            {
                $query  = "select * from posts where status='publish'";
                if(isset($c_name))
                {
                $query.=" and tags='$c_name'";
                }
               $query.="order by id desc";  

            }

           $con=mysqli_connect("localhost","root","","joboard");
           $run=mysqli_query($con, $query);
            if(mysqli_num_rows($run)>0)
            {
             while($row=mysqli_fetch_array($run))
                {
                   $id=$row['id'];
                   $title=$row['title'];
                   $content=$row['content'];
                   $image=$row['image'];
                   $title=$row['title'];
                   $date=$row['date'];
                   $url=$row['url'];

           ?>

            <div class="col-xs-4 col-sm-4 col-md-4 col-lg-4" >
            <div class="panel" style="border: 1px solid blue">
       <div class="panel-heading">
           <div class="row" style="border-radius:200px;">
               <div class="col-xs-3 col-sm-3 col-md-3 pull-left" style="margin-left: -13px;
                                                                        margin-top: -10px;" >
                   <a href="post.php?post_id=<?php echo $id;?>"><img src="<?php echo $image;?>" width="100" height="100"></a>
               </div>
               <div class="col-xs-9" style="text-align:center;">
                   <a href="post.php?post_id=<?php echo $id;?>">
                       <h3 style="margin-top: 0px;
                                  margin-right: -33px;"><?php echo $title;?> </h3></a>
                   <p style="text-align:justify; margin-right: -20px; padding-left: 25px;"> <?php echo $content;?> </p>
                    <a href="post.php?post_id=<?php echo $id;?>" class="btn btn-primary"> Details</a>
               </div>
           </div>
       </div>
                        <div class="panel-footer " style="color:black;
                                                          font-size:15px;">
                            <div class="row" style="padding-top:5px;
                                                    margin-bottom:-5px;
                                                    margin-top:-5px;">
                                <div class="col-xs-6  col-sm-6 col-md-6" > Last Date Apply<span class="pull-right"><i class=" fa fa-arrow-circle-right"></i> </span></div>
                                <div class="col-xs-6  col-sm-6 col-md-6"> <?php echo $date;?></div>
                            </div>
                            <hr style="width:100%;
                                       border:1px solid ccc#;">
                            <div class="row" style="padding-top:5px;
                                                    margin-top:-15px;">
                                <div class="col-xs-5  col-sm-5 col-md-5">Apply here<span class="pull-right"><i class=" fa fa-arrow-circle-right"></i> </span></div>
                                <div class="col-xs-7  col-sm-7 col-md-7" style="text-align:justify;"> <a href="#"><?php echo $url;?></a></div>
                            </div>
                               <div class="clearfix"></div>
                           </div>

                   </div>
               </div>
           <?php
               }
           }
           else
           {
               echo"<h3>No Related Post Here Search Something Else Thank you </h3>";
           }
            ?>