<?php
$boundary = "-----=".md5(uniqid(rand()));
$header = "MIME-Version: 1.0\r\n";
$header .= "Content-Type: multipart/mixed; boundary=\"$boundary\"\r\n";
$header .= "\r\n";
$msg = "Ceci est un message au format MIME 1.0 multipart/mixed.\r\n";
$msg .= "--$boundary\r\n";
$msg .= "Content-Type: text/plain; charset=\"iso-8859-1\"\r\n";
$msg .= "Content-Transfer-Encoding:8bit\r\n";
$msg .= "\r\n";
$date = date("d/m/Y");
$msg .= "Sauvegarde du $date \r\n";
$msg .= "\r\n";
$file = "fichier.gz";
$fp = fopen($file, "rb");
$attachment = fread($fp, filesize($file));
fclose($fp);
$attachment = chunk_split(base64_encode($attachment));
$msg .= "--$boundary\r\n";
$msg .= "Content-Type: application/x-gzip; name=\"$file\"\r\n";
$msg .= "Content-Transfer-Encoding: base64\r\n";
$msg .= "Content-Disposition: inline; filename=\"$file\"\r\n";
$msg .= "\r\n";
$msg .= $attachment . "\r\n";
$msg .= "\r\n\r\n";
$msg .= "--$boundary--\r\n";
$destinataire = "destinataire@gmail.com";
$expediteur   = "expediteur@gmail.com";
$reponse      = $expediteur;
mail($destinataire, "Sauvegarde de la base de données du $date", $msg,
     "Reply-to: $reponse\r\nFrom: $expediteur\r\n".$header);
?>

#!/usr/local/bin/php -q

mail -s "sauvegarde" destinataire@gmail.com < fichier.gz 
cat fichier.gz | mail -s "sauvegarde" destinataire@gmail.com 
uuencode fichier.gz | mail -s "sauvegarde" destinataire@gmail.com