[PHP] Mail avec fichiers joints, corrompus !

if (is_uploaded_file($fileatt)) {
 // Read the file to be attached ('rb' = read binary)
 $file = fopen($fileatt,'rb');
 $data = fread($file,filesize($fileatt));
 fclose($file);


 // Generate a boundary string
 $semi_rand = md5(time());
 $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
 
 // Add the headers for a file attachment
 $headers .= "\nMIME-Version: 1.0\n" .
             "Content-Type: multipart/mixed;\n" .
             " boundary=\"{$mime_boundary}\"";


 // Add a multipart boundary above the plain message
 $message = "This is a multi-part message in MIME format.\n\n" .
            "--{$mime_boundary}\n" .
            "Content-Type: text/plain; charset=\"iso-8859-1\"\n" .
            "Content-Transfer-Encoding: 7bit\n\n" .
            $message . "\n\n";


 // Base64 encode the file data
 $data = chunk_split(base64_encode($data));


 // Add file attachment to the message
 $message .= "--{$mime_boundary}\n" .
             "Content-Type: {$fileatt_type};\n" .
             " name=\"{$fileatt_name}\"\n" .
             "Content-Disposition: attachment;\n" .
             " filename=\"{$fileatt_name}\"\n" .
             "Content-Transfer-Encoding: base64\n\n" .
             $data . "\n\n" .
             "--{$mime_boundary}--\n";
}