How to sync two folders in PHP? - php

Question

I am using windows, Mysql DB, PHP
I am building the Joomla Component whose one of the functionality is to synchronize the folders
I want to sync two folders of different name.. How can I do this? It has to be dne in the same machine, no two different servers are involved in it..
How to sync two folders in PHP?
UPDATED
IN Context of Alex Reply
What if i am editing any .jpg file in one folder and saving it with same name as it has, also this file is already present in other folder. And I want this edited pic to be transfered to the other folder.? also I have Joomla's nested file structured to be compared
UPDATE 2
I have a recursive function which will output me the complete structure of folder... if u can just use it to concat ur solution in...
<?
function getDirectory($path = '.', $ignore = '') {
$dirTree = array ();
$dirTreeTemp = array ();
$ignore[] = '.';
$ignore[] = '..';
$dh = #opendir($path);
while (false !== ($file = readdir($dh))) {
if (!in_array($file, $ignore)) {
if (!is_dir("$path/$file")) {
$stat = stat("$path/$file");
$statdir = stat("$path");
$dirTree["$path"][] = $file. " === ". date('Y-m-d H:i:s', $stat['mtime']) . " Directory == ".$path."===". date('Y-m-d H:i:s', $statdir['mtime']) ;
} else {
$dirTreeTemp = getDirectory("$path/$file", $ignore);
if (is_array($dirTreeTemp))$dirTree = array_merge($dirTree, $dirTreeTemp);
}
}
}
closedir($dh);
return $dirTree;
}
$ignore = array('.htaccess', 'error_log', 'cgi-bin', 'php.ini', '.ftpquota');
$dirTree = getDirectory('.', $ignore);
?>
<pre>
<?
print_r($dirTree);
?>
</pre>

Answer 1

I just ran this, and it seems to work
function sync() {
$files = array();
$folders = func_get_args();
if (empty($folders)) {
return FALSE;
}
// Get all files
foreach($folders as $key => $folder) {
// Normalise folder strings to remove trailing slash
$folders[$key] = rtrim($folder, DIRECTORY_SEPARATOR);
$files += glob($folder . DIRECTORY_SEPARATOR . '*');
}
// Drop same files
$uniqueFiles = array();
foreach($files as $file) {
$hash = md5_file($file);
if ( ! in_array($hash, $uniqueFiles)) {
$uniqueFiles[$file] = $hash;
}
}
// Copy all these unique files into every folder
foreach($folders as $folder) {
foreach($uniqueFiles as $file => $hash) {
copy($file, $folder . DIRECTORY_SEPARATOR . basename($file));
}
}
return TRUE;
}
// usage
sync('sync', 'sync2');
You simply give it a list of folders to sync, and it will sync all files. It will attempt to skip files that appear the same (i.e. of whom their hash collides).
This however does not take into account last modified dates or anything. You will have to modify itself to do that. It should be pretty simple, look into filemtime().
Also, sorry if the code sucks. I had a go at making it recursive, but I failed :(
For a one way copy, try this
$source = '/path/to/source/';
$destination = 'path/to/destination/';
$sourceFiles = glob($source . '*');
foreach($sourceFiles as $file) {
$baseFile = basename($file);
if (file_exists($destination . $baseFile)) {
$originalHash = md5_file($file);
$destinationHash = md5_file($destination . $baseFile);
if ($originalHash === $destinationHash) {
continue;
}
}
copy($file, $destination . $baseFile);
}
It sounds like you just want to copy all files from one folder to another. The second example will do this.

Answer 2

I using this, and it seems to work, also make new dir if not exist .....
//sync the files and folders
function smartCopy($source, $dest, $options=array('folderPermission'=>0755,'filePermission'=>0755))
{
//$result = false;
if (is_file($source)) {
if ($dest[strlen($dest)-1]=='/') {
if (!file_exists($dest)) {
cmfcDirectory::makeAll($dest,$options['folderPermission'],true);
}
$__dest=$dest."/".basename($source);
} else {
$__dest=$dest;
}
$result = copy($source, $__dest);
chmod($__dest,$options['filePermission']);
} elseif(is_dir($source)) {
if ($dest[strlen($dest)-1]=='/') {
if ($source[strlen($source)-1]=='/') {
//Copy only contents
} else {
//Change parent itself and its contents
$dest=$dest.basename($source);
#mkdir($dest);
chmod($dest,$options['filePermission']);
}
} else {
if ($source[strlen($source)-1]=='/') {
//Copy parent directory with new name and all its content
#mkdir($dest,$options['folderPermission']);
chmod($dest,$options['filePermission']);
} else {
//Copy parent directory with new name and all its content
#mkdir($dest,$options['folderPermission']);
chmod($dest,$options['filePermission']);
}
}
$dirHandle=opendir($source);
while($file=readdir($dirHandle))
{
if($file!="." && $file!="..")
{
if(!is_dir($source."/".$file)) {
$__dest=$dest."/".$file;
} else {
$__dest=$dest."/".$file;
}
echo "$source/$file ||| $__dest<br />";
$result=smartCopy($source."/".$file, $__dest, $options);
}
}
closedir($dirHandle);
} else {
$result=false;
}
return $result;
}
//end of function
echo smartCopy('media', 'mobile/images');

Answer 3

function recurse_copy($src,$dst) {
$dir = opendir($src);
#mkdir($dst);
while(false !== ( $file = readdir($dir)) ) {
if (( $file != '.' ) && ( $file != '..' )) {
if ( is_dir($src . '/' . $file) ) {
recurse_copy($src . '/' . $file,$dst . '/' . $file);
}
else {
if(md5_file($src . '/' . $file) !== md5_file($dst . '/' . $file))
{
echo 'copying' . $src . '/' . $file; echo '<br/>';
copy($src . '/' . $file, $dst . '/' . $file);
}
}
}
}
closedir($dir);
}

Answer 4

If its on a Linux/Posix system then (depending on what access you have) it may be a lot simpler / faster to:
$chk=`rsync -qrRlpt --delete $src $dest`;
C.