<?php
$host = "localhost";
$user = "root";
$pass = ""; // On définit les infos de la base de données
$db = "mabase";
$date = date("d-m-Y"); // On définit le variable $date ( ici son format )

$backup = $db."bdd-backup_".$date.".sql.gz";
// Utilise les fonctions système : MySQLdump & GZIP pour générer un backup gzipé
$command = "mysqldump -h$host -u$user -p$pass $db | gzip> $backup";
system($command);
// Démarre la procédure de téléchargement
$taille = filesize($backup);
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-Type: application/gzip");
header("Content-Disposition: attachment; filename=$backup;");
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".$taille);
@readfile($backup);
// Supprime le fichier temporaire du serveur
unlink($backup);
?>

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Warning: Cannot modify header information - headers already sent by (output started at D:\Documents and Settings\Seb\Mes documents\Site web\Localhost\ztest.php:13) in D:\Documents and Settings\Seb\Mes documents\Site web\Localhost\ztest.php on line 21

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Warning: unlink(upload/freebdd-backup_12-10-2006.sql.gz) [function.unlink]: No such file or directory in D:\Documents and Settings\Seb\Mes documents\Site web\Localhost\ztest.php on line 25