Files corrup bij downloaden uit database

<?php
// Check if a file has been uploaded
if(isset($_FILES['uploaded_file'])) {

// Make sure the file was sent without errors
if($_FILES['uploaded_file']['error'] == 0) {
// Connect to the database
$dbLink = new mysqli('parochie-molenberg.nl', 'user', 'pass', 'DB');
if(mysqli_connect_errno()) {
die("MySQL connection failed: ". mysqli_connect_error());
}

// Gather all required data
$name = $dbLink->real_escape_string($_FILES['uploaded_file']['name']);
$mime = $dbLink->real_escape_string($_FILES['uploaded_file']['type']);
$data = $dbLink->real_escape_string(file_get_contents($_FILES  ['uploaded_file']['tmp_name']));
$size = intval($_FILES['uploaded_file']['size']);
 
// Create the SQL query
$query = "INSERT INTO `file` (`name`, `mime`, `size`, `data`, `created`)
            VALUES ('{$name}', '{$mime}', {$size}, '{$data}', NOW())"; 
// Execute the query
$result = $dbLink->query($query);

// Check if it was successfull
if($result) {
echo 'Success! Your file was successfully added!';
}
else {
echo 'Error! Failed to insert the file'
. "<pre>{$dbLink->error}</pre>";
}
}
else {
echo 'An error accured while the file was being uploaded. '
. 'Error code: '. intval($_FILES['uploaded_file']['error']);
}

// Close the mysql connection
$dbLink->close();
}
else {
echo 'Error! A file was not sent!';
}
// Echo a link back to the main page
echo '<p>Click <a href="send_file.php">here</a> to go back</p>';
?>

<?php
 // Make sure an ID was passed
 if(isset($_GET['id'])) {
 // Get the ID
     $id = intval($_GET['id']);
 
     // Make sure the ID is in fact a valid ID
     if($id <= 0) {
         die('The ID is invalid!');
     }
     else {
         // Connect to the database
         $dbLink = new mysqli('parochie-molenberg.nl', 'user', 'pass', 'DB');
         if(mysqli_connect_errno()) {
             die("MySQL connection failed: ". mysqli_connect_error());
         }
 
         // Fetch the file information
         $query = "
             SELECT `mime`, `name`, `size`, `data`
             FROM `file`
             WHERE `id` = {$id}";
         $result = $dbLink->query($query);
 
         if($result) {
             // Make sure the result is valid
             if($result->num_rows == 1) {
             // Get the row
                 $row = mysqli_fetch_assoc($result);
 
                 // Print headers
                 header("Content-Type: ". $row['mime']);
                 header("Content-Length: ". $row['size']);
                 header("Content-Disposition: attachment; filename=". $row['name']);
 
                 // Print data
                 echo $row['data'];
             }
             else {
                 echo 'Error! No image exists with that ID.';
             }
 
             // Free the mysqli resources
             @mysqli_free_result($result);
         }
         else {
             echo "Error! Query failed: <pre>{$dbLink->error}</pre>";
         }
         @mysqli_close($dbLink);
     }
 }
 else {
     echo 'Error! No ID was passed.';
 }
 ?>

<?php
 // Connect to the database
 $dbLink = new mysqli('parochie-molenberg.nl', 'user', 'pass', 'DB');
 if(mysqli_connect_errno()) {
     die("MySQL connection failed: ". mysqli_connect_error());
 }
 
 // Query for a list of all existing files
 $sql = 'SELECT `id`, `name`, `mime`, `size`, `created` FROM `file`';
 $result = $dbLink->query($sql);
 
 // Check if it was successfull
 if($result) {
     // Make sure there are some files in there
     if($result->num_rows == 0) {
         echo '<p>There are no files in the database</p>';
     }
     else {
         // Print the top of a table
         echo '<table width="100%">
                 <tr>
                     <td><b>Name</b></td>
                     <td><b>Mime</b></td>
                     <td><b>Size (bytes)</b></td>
                     <td><b>Created</b></td>
                     <td><b>&nbsp;</b></td>
                 </tr>';
 
         // Print each file
         while($row = $result->fetch_assoc()) {
             echo "
                 <tr>
                     <td>{$row['name']}</td>
                     <td>{$row['mime']}</td>
                     <td>{$row['size']}</td>
                     <td>{$row['created']}</td>
                     <td><a href='get_file.php?id={$row['id']}'>Download</a></td>
                 </tr>";
         }
 
         // Close table
         echo '</table>';
     }
 
     // Free the result
     $result->free();
 }
 else
 {
     echo 'Error! SQL query failed:';
     echo "<pre>{$dbLink->error}</pre>";
 }
 
 // Close the mysql connection
 $dbLink->close();
 ?>

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