PHP Decode

<?php 
$link = mysqli_connect("localhost","root","","manmode"); 
if($link===false)die("ERROR: Could Not Connect. " . mysqli_connect_error()); 
} 
$first_name = mysqli_real_escape_string($link, $_REQUEST['first_name']); 
$middle_name = mysqli_real_escape_string($link, $_REQUEST['middle_name']); 
$last_name = mysqli_real_escape_string($link, $_REQUEST['last_name']); 
$gender = mysqli_real_escape_string($link, $_REQUEST['gender']); 
$email = mysqli_real_escape_string($link, $_REQUEST['email']); 
$course = mysqli_real_escape_string($link, $_REQUEST['course']); 
$address = mysqli_real_escape_string($link, $_REQUEST['address']); 
$percentage_10 = mysqli_real_escape_string($link, $_REQUEST['percentage_10']); 
$passout_10 = mysqli_real_escape_string($link, $_REQUEST['passout_10']); 
$percentage_12 = mysqli_real_escape_string($link, $_REQUEST['percentage_12']); 
$passout_12 = mysqli_real_escape_string($link, $_REQUEST['passout_12']); 
$contact_no = mysqli_real_escape_string($link, $_REQUEST['contact_no']); 
$sql = "INSERT INTO sujit  
(first_name,middle_name,last_name,gender,email,course,address,percentage_10,pass 
out_10,percentage_12,passout_12,contact_no) VALUES  
('$first_name','$middle_name','$last_name','$gender','$email','$course','$address','$per 
centage_10','$passout_10','$percentage_12','$passout_12','$contact_no')"; 
if(mysqli_query($link,$sql)) 
{ 
echo"Records added successfully."; 
} 
else 
{echo"ERROR: Could not able to execute $sql. " . mysqli_error($link); 
} 
mysqli_close($link); 
?> 
<?php 
 $dbh = new PDO("mysql:host=localhost;dbname=mydata", "root", ""); 
 if(isset($_POST['btn'])){ 
 $name = $_FILES['myfile']['name']; 
 $type = $_FILES['myfile']['type']; 
 $data = file_get_contents($_FILES['myfile']['tmp_name']); 
 $stmt = $dbh->prepare("insert into myblob values('',?,?,?)"); 
 $stmt->bindParam(1,$name); 
 $stmt->bindParam(2,$type); 
 $stmt->bindParam(3,$data); 
 $stmt->execute(); 
 } 
 ?>