PHP - Empty Php Tags Output Zero

  
Am trying to get user input then compare it with the value in database then return an output in form of echo. It shows a blank page of whick i cant figure out the error. This is what i have tried so far.

This is a file called t12.php   

<?php

  include 'db.php';
  error_reporting(E_ALL | 
   E_WARNING | E_NOTICE);
    
  ini_set('display_errors', 
  TRUE);

     if (session_status() 
    == PHP_SESSION_NONE) 
    {
    session_start();
    }


  if(!isset($_SESSION['login']))
    {
         echo (" 
   <script>location.href='../clogin/'</script>");
    die();

  if(isset($_POST['transfer']))

     {

     $username = 
    $_SESSION['login'];

     $transAmount = 
    $_POST['transAmount'];

     $totalTrans = 
    $transAmount + 30;

    $sql = "SELECT * FROM 
   customer WHERE username = ?";
    $stmt = $connection->prepare($sql); 
    $stmt->bind_param('s', $username);
    $stmt->execute();
    $result = $stmt->get_result();
    $count =  $result->num_rows;
      if($count == 1) 
     {  
 
    while ($row = $result->fetch_assoc())
     {
 
        if($totalTrans > $row['transLimit']) 
    {
    
    echo 'you have exceeded limit';

    exit(); 
    }
     else
     {
      echo"limit passed";
      }

      }//while loop
      }//count

       }//submit
       }//session
       ?>

                     
The html form is this...

<form action="t12.php" method="post">
          <input type="number" name="transAmount" placeholder="Enter Amount"> 
   </input><br>
    <button type="submit" name="transfer">Proceed</button></form>

Have tried lot of stuffs but doesnt work out. I would appreciate if you can take your time to check for me and point out the errors. Also please be nice with your comments. Thanks in advance

<?php 
                        $counter = 2;
			$sqlq="select * from state WHERE status = 0 ";
			$categorysqlq = mysql_query($sqlq);
			$varq = mysql_num_rows($categorysqlq);

			while($catfetchq = mysql_fetch_array($categorysqlq))
			{
 $cnty =  $catfetchq[0];

		 $sqllq="select * from vehicle WHERE country = '$cnty' ";
			$categorysqllq = mysql_query($sqllq);
		
			
			$numsql = "select * from branchaddr WHERE state = '$cnty' ";
			$numquery = mysql_query($numsql);
$varqa = mysql_num_rows($numquery);
$cntyfetchq= mysql_fetch_array($numquery);	
if($varq != 0){
					if($counter == 2){
                                            	echo "<tr><td><a href=\"transport2.php?id=".$cntyfetchq['state'].">".$catfetchq[1]."(<span style=\"color:red\">".$varqa."</span>)</a></td>";                                                                              
						$counter--;
					}
					else{						
						echo "<td><a href=\"transport2.php?id=".$cntyfetchq['state'].">".$catfetchq[1]."(<span style=\"color:red\">".$varqa."</span>)</a></td></tr>";                                          
						$counter = 2;
					}
				}
			}	
?>