<?php 
 $backupdate = date("Ymd"); 
 //Backup date variable. Replace "Ymd" with 
 //"Ymd_H-i" to include the time. 
 
 $backupdir = "/the/absolute/path/to/the/folder/"; 
 //Where are the files located? 
 
 $files = "*"; 
 //What file to backup? Use a * to backup all the files 
 //inside the folder entered above. 
 
 $backupto = "/the/absolute/path/to/the/folder/"; 
 //Where to store the tarball? 
 
 $fileprefix = "bak"; 
 //This is the prefix that will be added before the date: 
 //(bak_20040326.tar.bz2) 
 //The underscore _ is added automatically 
 
 $tararg = "-cf"; 
 //Here goes the tar arguments. I recommend -cf. 
 //c is for compressing. f is for outputting 
 //a file. 
 
 $bz2arg = "-z9"; 
 //Here goes the bunzip2 arguments. I recommend -z9. 
 //z is for creating a archive 
 //and 9 is for max compression. z is always needed 
 
//Call the function 
backupsus(); 
 
function backupsus() { 
 global $backupdate,$backupdir,$backupto, 
 $fileprefix,$tararg,$bz2arg,$files; 
$backupsuscmd = "cd $backupdir; 
 tar $tararg {$fileprefix}_{$backupdate}.tar $files; 
 bunzip2 $bz2arg {$fileprefix}_{$backupdate}.tar; 
 mv {$fileprefix}_{$backupdate}.tar.bz2 $backupto"; 
 passthru ("$backupsuscmd"); 
 } 
?>