Probleme chiant formulaire php

Bonjour a tous,

J'ai un formulaire d'upload qui fait appel a un script php avec saisie dans base de donnée sql

L'envois du fichier sur le serveur se passe tres bien mais pas la partie sql

Si quelqu'un pouvait passer par la. La requete sql est en bas du code php

<?php include("admin/parametres.php"); ?>
<?php
include("JSON.php");
$result = array();

$types = array('jpg');

if (isset($_FILES['photoupload']) )
{
$file = $_FILES['photoupload']['tmp_name'];
$error = false;
$size = false;

$filename = basename($_FILES['photoupload']['name']);
$ext = substr($filename, strrpos($filename, '.') + 1);

if (!is_uploaded_file($file) || ($_FILES['photoupload']['size'] > 2 * 1024 * 1024) )
{
$error = 'Please upload only files smaller than 2Mb!';
}
elseif (!in_array($ext, $types))
{
$error = 'Unsupported file format.';
}
else {
move_uploaded_file($_FILES['photoupload']['tmp_name'], "./uploadedfiles/".$_FILES['photoupload']['name']);
chmod("./uploadedfiles/".$_FILES['photoupload']['name'], 0777);
}

$addr = gethostbyaddr($_SERVER['REMOTE_ADDR']);

$log = fopen('script.log', 'a');
fputs($log, ($error ? 'FAILED' : 'SUCCESS') . ' - ' . preg_replace('/^[^.]+/', '***', $addr) . ": {$_FILES['photoupload']['name']} - {$_FILES['photoupload']['size']} byte\n" );
fclose($log);

if ($error)
{
$result['result'] = 'failed';
$result['error'] = $error;
}
else
{
$result['result'] = 'success';
$result['size'] = "Uploaded successful.";

// la requete est ici

mysql_query("INSERT INTO images VALUES('', '" . $filename . "', '')");

}

}
else
{
$result['result'] = 'error';
$result['error'] = 'Missing file or internal error!';
}

if (!headers_sent() )
{
header('Content-type: application/json');
}

echo json_encode($result);

?>