Download Blob file with php ( mysql ) - php

Question

I have a MySQL database where I have a table call for example "ALL" can contain a blob files.
In the table i have stored the: size of the file, the type, the name and the content.
The problem come when i try download the blob file.
This is my script:
<?php
$connection = mysqli_connect("localhost","user","password",dbname)
or die('Database Connection Failed');
mysqli_set_charset($connection,'utf-8');
$query = "SELECT * " ."FROM ALL WHERE id = '25'";
$result = mysqli_query($connection,$query)
or die('Error, query failed');
list($id, $user_made, $title, $category, $sub_category, $text, $type, $date, $time, $namefile1, $typefile1, $sizefile1, $contentfile1, $namefile2, $typefile2, $sizefile2, $contentfile2, $namefile3, $typefile3, $sizefile3, $contentfile3) = mysqli_fetch_array($result);
echo $id . $namefile1 . $typefile1 . $sizefile1;
header('Content-Length: '.$sizefile1);
header('Content-Type: '.$typefile1);
header('Content-Disposition: attachment; filename="'.$namefile1.'"');
header('Content-Transfer-Encoding: binary');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
ob_clean();
flush();
// echo $contentfile1;
mysqli_close($connection);
exit;
?>
But the page output only the echo of "$contentfile1" and "$id . $namefile1 . $typefile1 . $sizefile1".
Everyone can help me?
Thanks

Answer 1

Add this code before ob_clean.
$context = stream_context_create();
$file = fopen($filename, 'rb', FALSE, $context);
while(!feof($file))
{
echo stream_get_contents($file, max_bytes_to_read);
}
fclose($file);
You can get more information about stream_get_contents at http://php.net/manual/en/function.stream-get-contents.php