<a href = ' '> value

Question

I am trying to get the value of an anchor tag using PHP code. When I click the hyperlink, however, I am not getting the value.

My code is as follows:

<?php 
    $gettingevents = "SELECT event_name FROM events"; 
    $resultgettingevents = mysqli_query($con,$gettingevents) or die(mysqli_error($con)); 

    while($getevents = mysqli_fetch_assoc($resultgettingevents)){ 
     $gettablenames = $getevents['event_name']; 
     echo '<a id="events" href="registeredevents.php?tablename='.$getevents['event_name'].'">'.$gettablenames.'</a>'; 

     if(isset($_GET['tablename'])){ 
      $clickedtable =$_GET['tablename']; 
      echo "the clicked table is ".$clickedtable; 
     }else{ 
      echo ""; 
     } 

    } 
?> 

I am getting the following error:

undefined index: tablename in

What is wrong with my code? How can I get the hyperlink value?

Answer 1

Try

<?php 
    $gettingevents = "SELECT event_name FROM events"; 
    $resultgettingevents = mysqli_query($con,$gettingevents) or die(mysqli_error($con)); 
    while($getevents = mysqli_fetch_assoc($resultgettingevents)){ 
     $gettablenames = $getevents['event_name']; 
     echo '<a id="events" href="registeredevents.php?tablename='.$getevents['event_name'].'">'.$gettablenames.'</a>'; 
     if(isset($_GET['tablename'])){  
      $clickedtable =$_GET['tablename']; 
     } 
    } 
    ?>