boluwebtasarim adlı üyeden alıntı: mesajı görüntüle
tabi hocam örnek db veri girişi şu şekilde https://prnt.sc/201rkd4 yani verileri text değildi id oluşturarak ekliyor

veri girişi php tarafı

<?php
@session_start();
if(!isset($_SESSION['usr'])){
  header("Location: index.php");
        die();
} ?>
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="">
    <link rel="icon" href="../../favicon.ico">

    <title>Uygulama admin Paneli</title>

    <!-- Bootstrap core CSS -->
   <link href="css/bootstrap.min.css" rel="stylesheet">

    <!-- Custom styles for this template -->
    <link href="css/dashboard.css" rel="stylesheet">
  

    <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
  </head>

  <body>

    <div class="navbar navbar-inverse navbar-fixed-top" role="navigation">
      <div class="container-fluid">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target=".navbar-collapse">
            <span class="sr-only"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="#">Admin Panel</a>
        </div>
        <div class="navbar-collapse collapse">
          <?php include('menu.php');?>
          
        </div>
      </div>
    </div>

    <div class="container-fluid">
      <div class="row">
      
           <div class="col-sm-12 col-sm-offset-3 col-md-10 col-md-offset-2 main">
          <h2 class="page-header">Uygulama Admin Paneli</h2>          
          <h4 class="sub-header">Takım Ekle</h4>
          
          
          <form class="form-horizontal" role="form" action="addtakimdb.php" method="POST" enctype="multipart/form-data">
 

 <div class="form-group">
               <label for="CategorySelect" class="col-sm-2 control-label">Lig Seç</label>
               <div class="col-sm-4">
                   <select name="ligid" id="ligid" required >
                      
                  <?php
                    require 'db.php';
                    $result = mysqli_query($conn,"SELECT * FROM lig")  ;
                    if (mysqli_num_rows($result) > 0) :
                         while ($row = $result->fetch_assoc()) {
                            $id = $row["id"];    
                            $cname = $row["adi"];
                            ?>
                      <option value="<?php echo $id;?>"><?php echo $cname;?></option>  
                             <?php
                            
                         }
                    endif;
                  ?>
                      
                  </select>
                  
               </div>
            </div>
      

    <div class="form-group">
      <label for="Tag" class="col-sm-2 control-label">Takımlar:</label>
      <div class="col-sm-4">
           <textarea  class="form-control"  id="takimlist" name="takimlist"  rows="10" cols="50"></textarea>
  
      </div>
   </div>
      
   <div class="form-group">
      <div class="col-sm-offset-1 col-sm-8">
           <?php
                    if (isset($_REQUEST['add_cdata'])):
                        if(!empty($_REQUEST['add_cdata'])):    
                           $add_cdata = $_GET['add_cdata'];
                        if('empty'==$add_cdata):
                        ?>
                             <div style="line-height: 1.7em;color:red;">Boş Kısım bırakmayın lütfen</div>
                            
                            <?php
                             endif;
                            
                           if('success'==$add_cdata):
                        ?>
                             <div style="line-height: 1.7em;color:green;">Başarıyla Eklendi!</div>
                            
                            <?php
                             endif;
                            
                             if('failed'==$add_cdata):
                        ?>
                             <div style="line-height: 1.7em;color:red;">Hata!!</div>
                            
                            <?php
                             endif;
                            
                        endif;
                        
                     endif;
                        
            
            ?>
                                            
         <button type="submit" class="btn btn-default">Ekle</button>
      </div>
   </div>
</form>
          
          
                  
             <h4 class="sub-header">Takımlar</h4>
            
            
            
    
          
          <div class="col-sm-9 col-md-8  main">
          <div class="table-responsive">
            <table class="table table-striped">
              <thead>
                <tr>
                  <th>ID</th>
                  <th>Adı</th>  
                  <th>Lig</th>      
                  <th>İşlemler</th>

                </tr>
              </thead>
              <tbody>
                  
                   <?php
                    require 'db.php';
                    $result = mysqli_query($conn,"SELECT * FROM takim  ORDER BY ligid DESC")  ;
                    if (mysqli_num_rows($result) > 0) :
                         while ($row = $result->fetch_assoc()) {
                            $id = $row["id"];                          
                            $adi = $row["takimadi"];
                            $ligid = $row["ligid"];
                            $result_pcat = mysqli_query($conn,"SELECT * FROM lig where id=".$ligid)  ;
                            $data_pcat = mysqli_fetch_assoc($result_pcat);
                            $pcat = $data_pcat['adi'];
                                                        
                           ?>
                <tr>
                  
                  <td><?php echo $id;?></td>
                  
                  <td><?php echo $adi;?></td>
                  <td><?php echo $pcat;?></td>
                          <td>  <a href="edittakim.php?qid=<?php echo $id?>"><img border="0" src="edit.png" width="20" height="20"></a>&emsp;
             <a href="deletetakim.php?cid=<?php echo $id?>"><img border="0" src="delete.png" width="20" height="20"></a></a></td>
                </tr>
              
                <?php } endif; ?>
              </tbody>
            </table>
          </div>
          </div>
          
          
          
        </div>
      </div>
    </div>

    <!-- Bootstrap core JavaScript
    ================================================== -->
    <!-- Placed at the end of the document so the pages load faster -->
   <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
   <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

  
  </body>
</html>

Paylaştığınız sayfada herhangi bir UPDATE sorgusu yok. Veri ekleme işlemini addtakimdb.php dosyasında yapıyorsunuz. Form verileri oraya POST ediyor.
Dilerseniz özel mesaj yoluyla iletişime geçin yardımcı olayım. Ufak bir probleme benziyor