PHP Recursive Backup Script - php

Question

I wrote a basic content-management system for my website, including an administration panel. I understand basic file IO as well as copying via PHP, but my attempts at a backup script callable from the script have failed. I tried doing this:
//... authentication, other functions
for(scandir($homedir) as $buffer){
if(is_dir($buffer)){
//Add $buffer to an array
}
else{
//Back up the file
}
}
for($founddirectories as $dir){
for(scandir($dir) as $b){
//Backup as above, adding to $founddirectories
}
}
But it did not seem to work.
I know that I can do this using FTP, but I want a completely server-side solution that can be accessed anywhere with sufficient authorization.

Answer 1

Here is an alternative though: why don't you Zip the source directory instead?
function Zip($source, $destination)
{
if (extension_loaded('zip') === true)
{
if (file_exists($source) === true)
{
$zip = new ZipArchive();
if ($zip->open($destination, ZIPARCHIVE::CREATE) === true)
{
$source = realpath($source);
if (is_dir($source) === true)
{
$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);
foreach ($files as $file)
{
$file = realpath($file);
if (is_dir($file) === true)
{
$zip->addEmptyDir(str_replace($source . '/', '', $file . '/'));
}
else if (is_file($file) === true)
{
$zip->addFromString(str_replace($source . '/', '', $file), file_get_contents($file));
}
}
}
else if (is_file($source) === true)
{
$zip->addFromString(basename($source), file_get_contents($source));
}
}
return $zip->close();
}
}
return false;
}
You can even unzip it afterwards and archive the same effect, although I must say I prefer having my backups compressed in zip file format.

Answer 2

if you have access to execute tar binary file through exec function it would be faster and better i think:
exec('tar -zcvf ' . realpath('some directory') .'/*);
or
chdir('some directory')
exec('tar -zcvf ./*');

Answer 3

You can use recursion.
for(scandir($dir) as $dir_contents){
if(is_dir($dir_contents)){
backup($dir_contents);
}else{
//back up the file
}
}

Answer 4

you got it almost right
$dirs = array($homedir);
$files = array();
while(count($dirs)) {
$dir = array_shift($dirs);
foreach(glob("$dir/*") as $e)
if(is_dir($e))
$dirs[] = $e;
else
$files[] = $e;
}
// here $files[] contains all files from $homedir and below
glob() is better than scandir() because of more consistent output

Answer 5

I us something called UPHP. Just call zip() to do that. here:
<?php
include "uphplib.php";
$folder = "data";
$dest = "backup/backup.zip";
zip($folder, $dest);
?>
UPHP is a PHP library. download: here

Answer 6

Here is a backup script with ftp, scp, mysqldump, pg_dump and filesystem capabilities https://github.com/skywebro/php-backup

Answer 7

i use a simple function to backup a file:
<?php
$oldfile = 'myfile.php';
$newfile = 'backuped.php';
copy($oldfile, $newfile) or die("Unable to backup");
echo 'Backup is Completed';
?>