Update statement in my project not updating data in table

Question

I am trying to update the record of Employee.MY query shows the message "Employee record updated Successfully" but it is not updating in table My code goes like this

{
$eid=intval($_GET['uin']);
$uin=$_POST['uin'];
$fname=$_POST['firstName'];
$lname=$_POST['lastName'];   
$email=$_POST['email']; 
$department=$_POST['department']; 
$recoffr=$_POST['recoffr']; 
$mobileno=$_POST['mobileno'];
$sql="
update tblemployees 
   set FirstName = :fname
     , LastName = :lname
     , email = :email
     , department = :department
     , recoffr = :recoffr
     , Phonenumber = :mobileno 
 where uin = :eid
";
$query = $dbh->prepare($sql);
$query->bindParam(':uin',$uin,PDO::PARAM_STR);
$query->bindParam(':fname',$fname,PDO::PARAM_STR);
$query->bindParam(':lname',$lname,PDO::PARAM_STR);
$query->bindParam(':email',$email,PDO::PARAM_STR);
$query->bindParam(':department',$department,PDO::PARAM_STR);
$query->bindParam(':recoffr',$recoffr,PDO::PARAM_STR);
$query->bindParam(':mobileno',$mobileno,PDO::PARAM_STR);
$query->execute();
$msg="Employee record updated Successfully";

}

My table structure is Table structure

Answer 1

You have assigned Uin to wrong Id

$query->bindParam(':eid',$uin,PDO::PARAM_STR);

not

$query->bindParam(':uin',$uin,PDO::PARAM_STR);

Answer 2

you can try this:

 if (isset($_GET['uin'])) {
            $ID = $_GET['uin'];
        } else {
            $ID = "";
        }
    $tblemployees_data = array();
    
        $sql_query = "SELECT firstName, lastName, email, department, recoffr, mobileno
                        FROM tblemployees
                        WHERE uin = ?";
    
    if ($query_category->prepare($sql_query)) {
            // Bind your variables to replace the ?s
            $query_category->bind_param('s', $ID);
            // Execute query
            $query_category->execute();
            // store result
            $query_category->store_result();
            $query_category->bind_result($previous_category_image);
            $query_category->fetch();
            $query_category->close();
        }