Попытка обновления записи с помощью PDO

Я обновил код вопроса. У меня все еще не возникает ошибок, но запись не обновляется. Также необходимо выяснить, как правильно писать в записи # обновлено. Я застрял на этой странице обновления.

<?php
error_reporting(E_ERROR | E_PARSE);
require_once("db_connect.php");
  $id = $_REQUEST['id'];
  $lanId = $_REQUEST['lanId'];
  $name= $_REQUEST['name'];
  $department = $_REQUEST['department'];
  $manager= $_REQUEST['manager'];
  $request = $_REQUEST['request'];
 $request_description = $_REQUEST['request_description'];
  $request_comments = $_REQUEST['request_comments'];
  $status = $_REQUEST['status'];
  $comments = $_REQUEST['comments'];
  $compUser = $_REQUEST['compUser'];
  $compDt = $_REQUEST['compDt'];
  
  
  $sql =   "UPDATE requests SET " . 
				"lanId =  '" . $lanId . "', ".
				"name =  '" . $name . "', ".
				"department = '" . $department . "', ".
				"manager = '" . $manager. "', " .
				"request = '" . $request. "', " .
				"request_description = '" . $request_description. "', " .
				"request_comments = '" . $request_comments. "', " .
				"status = '" . $status. "', " .
				"comments = '" . $comments. "', " .
				"compUser = '" . $compUser. "', " .
				"compDt = '" . $compDt. "'  WHERE id = '" . $id .  "';";
				
				#echo($sql);
				
				mysql_query($sql) or die (mysql_error);
				
			print("Record " . $id .  " has been updated. .")


?>
<html>

<head>
<meta http-equiv=REFRESH CONTENT=2;url=StatusPages/received.php>
<title>

</title>
</head>
<body background="images/background.jpg">

</body>

</html>

страница update.php

<?php
    include('db_connect.php');
    $id=$_GET['id'];
    $result = $db->prepare("SELECT * FROM requests WHERE id= :id");
    $result->bindParam(':id', $id);
    $result->execute();
    for($i=0; $row = $result->fetch(); $i++){
?>

<html>
<head>
<title></title>

<style type="text/css">

}
.body{
    background-color: #F2F2F2;
    border: thin solid #666666;
}
</style>

</head>
<body class='body'>
<form action = "update_process.php" " method ="post" class="Form">


<p><input type ="hidden" name = "id" value="<?php print($id); ?>"</p>

<h2 align="center">Users request  Information</h2>
<table border='1' align="center">
<tr>    
    <td>LAN ID:</td>
<td><input type="text" value ="<?php  print($row['lanId']) ?>"name="lanId"></td>

    <td>Name:</td>
<td><input type="text" value ="<?php  print($row['name']) ?>"name="name"></td>
</tr>

<tr>    
    <td>Department Location</td>
<td><input type="text" value ="<?php  print($row['department']) ?>"name="department"></td>

    <td>Manager</td>
<td><input type="text" value ="<?php  print($row['manager']) ?>"name="manager"></td>
</tr>


<tr>    
    <td>Request</td>
<td><input type="text" value ="<?php  print($row['request']) ?>"name="request"></td>

<td>Request Description</td>
<td><input type="text" value ="<?php  print($row['request_description']) ?>"name="request_description"></td>

</tr>
</table>

<table border='1' align="center">
<br>
<h2 align='center'>Requested Comments</h2>
<tr>    

<td width='300'  height="40">
<input type="text" value ="<?php  print($row['request_comments'.'']) ?>"name="request_comments" size="50" style="height: 32px; width: 587px;" ></td>

</tr>

</table>


<h2 align="center">Complete or Update Requests Status</h2>

<table border='1' align="center" style="width: 595px">
<tr>    
    <td>Completed Date</td>
<td style="width: 303px">
<input type="text" value ="<?php echo date("Y-m-d",time())?>"name="compDt" style="width: 148px"></td>


</tr>
<tr>    
    <td>Status</td>
<td style="width: 303px"><select name ="status" style="width: 149px" >
<option value <?php if ($row['status']==1){ print('selected');}  ?> ="Received">Received</option>
<option value <?php if ($row['status']==2){ print('selected');}  ?> ="Completed">Completed</option>
<option value <?php if ($row['status']==3){ print('selected');}  ?> ="Cancelled">Cancelled</option>
<option value <?php if ($row['status']==4){ print('selected');}  ?> ="In_Progress">In_Progress</option>
<option value <?php if ($row['status']==5){ print('selected');}  ?> ="On_Hold">On_Hold</option>

</select>
</td>
</tr>
<tr>
    <td>Completed by</td>
<td style="width: 303px"><select name ="compUser" style="width: 149px" >
<option value <?php if ($row['compUser']==1){ print('selected');}  ?> ="unasigned">Please Select....</option>
<option value <?php if ($row['compUser']==1){ print('selected');}  ?> ="xgrh">xgrh</option>
<option value <?php if ($row['compUser']==2){ print('selected');}  ?> ="zeap">zeap</option>
<option value <?php if ($row['compUser']==2){ print('selected');}  ?> ="xjae">xjae</option>

</select>
</td>
</tr>


</table>




<div align='center'>    
<br>Comments:<br>   
<textarea name="comments" Value = "<?php  print($row['request_comments']) ?>"  style="width: 593px; height: 100px"></textarea><br>
    <br><br>
<input type="submit" value= "Update Information">
<br>
</div>
</form>


</body>
</html>
<?php
    }
?>

страница update_process.php

<?php
 include('db_connect.php');
 
   $action = isset( $_POST['action'] ) ? $_POST['action'] : "";
            if($action == "update"){ 
            try{    
            global $conn;
 $sql = 'UPDATE requests SET lanId= :lanId, name= :name, department= :department,manager= :manager,request= :request,request_description= :request_description, request_comments= :request_comments,status= :status,comments= :comments,compUser= :compUser, compDt= :comDt WHERE id= :id';
$stmt = $pdo->prepare($sql);                                  
$stmt->bindParam(':lanId', $_POST['lanId'], PDO::PARAM_STR);       
$stmt->bindParam(':name', $_POST['$name'], PDO::PARAM_STR); 
$stmt->bindParam(':department', $_POST['department'], PDO::PARAM_STR);   
$stmt->bindParam(':manager', $_POST['manager'], PDO::PARAM_STR);
$stmt->bindParam(':request', $_POST['request'], PDO::PARAM_STR);    
$stmt->bindParam(':request_description', $_POST['request_description'], PDO::PARAM_STR);
$stmt->bindParam(':request_comments', $_POST['request_comments'], PDO::PARAM_STR);
$stmt->bindParam(':status', $_POST['status'], PDO::PARAM_STR);
$stmt->bindParam(':comments', $_POST['comments'], PDO::PARAM_STR);
$stmt->bindParam(':compUser', $_POST['compUser'], PDO::PARAM_STR);
$stmt->bindParam(':comDt', $_POST['comDt'], PDO::PARAM_STR);

$stmt->execute();
}catch(PDOException $exception){ 
            echo "Error: " . $exception->getMessage();
    }   
}
  


?> 

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