A more efficient dircopy function that provides webfarm sync
support. 
<?php
/* Copies a dir to another. Optionally caching the dir/file
structure, used to synchronize similar destination dir (web
farm).
*
*  param $src_dir str Source directory to copy (without
ending slash).
* param $dst_dir str Destination directory to copy to
(without ending slash).
* param $verbose bool Show or hide file copied
messages
* param $use_cached_dir_trees bool Set to true to cache
src/dst dir/file structure. Used to sync to web farms
* (avoids loading the same dir tree in web farms;
making sync much faster).
* return Number of files copied/updated.
* example
* To copy a dir:
* dircopy("c:maxpics",
"d:backupsmaxpics");
*
* To sync to web farms (webfarm 2 to 4 must have same
dir/file structure (run once with cache off to make sure if
necessary)):
* dircopy("//webfarm1/wwwroot",
"//webfarm2/wwwroot", false, true);
* dircopy("//webfarm1/wwwroot",
"//webfarm3/wwwroot", false, true);
* dircopy("//webfarm1/wwwroot",
"//webfarm4/wwwroot", false, true);
*/
function dircopy($src_dir, $dst_dir, $verbose = false,
$use_cached_dir_trees = false)
{
$num = 0;
static $cached_src_dir;
static $src_tree;
static $dst_tree;
if (!$use_cached_dir_trees || !isset($src_tree) ||
$cached_src_dir != $src_dir)
{
$src_tree = get_dir_tree($src_dir);
$cached_src_dir = $src_dir;
}
if (!$use_cached_dir_trees || !isset($dst_tree))
{
$dst_tree = get_dir_tree($dst_dir);
if (!is_dir($dst_dir)) mkdir($dst_dir, 0777, true);
}
foreach ($src_tree as $file => $src_mtime)
{
if (!isset($dst_tree[$file]) && $src_mtime ===
false) // dir
mkdir("$dst_dir/$file");
elseif (!isset($dst_tree[$file]) && $src_mtime ||
isset($dst_tree[$file]) && $src_mtime >
$dst_tree[$file]) // file
{
if (copy("$src_dir/$file",
"$dst_dir/$file"))
{
if($verbose) echo "Copied '$src_dir/$file' to
'$dst_dir/$file'<br>rn";
touch("$dst_dir/$file", $src_mtime);
$num++;
} else
echo "<font color='red'>File
'$src_dir/$file' could not be
copied!</font><br>rn";
}
}
return $num;
}
/* Creates a directory / file tree of a given root
directory
*
* param $dir str Directory or file without ending
slash
* param $root bool Must be set to true on initial call
to create new tree.
* return Directory & file in an associative array
with file modified time as value.
*/
function get_dir_tree($dir, $root = true)
{
static $tree;
static $base_dir_length;
if ($root)
{
$tree = array();
$base_dir_length = strlen($dir) + 1;
}
if (is_file($dir))
{
//if (substr($dir, -8) != "/CVS/Tag" &&
substr($dir, -9) != "/CVS/Root" &&
substr($dir, -12) != "/CVS/Entries")
$tree[substr($dir, $base_dir_length)] = filemtime($dir);
} elseif (is_dir($dir) && $di = dir($dir)) // add
after is_dir condition to ignore CVS folders: &&
substr($dir, -4) != "/CVS"
{
if (!$root) $tree[substr($dir, $base_dir_length)] =
false;
while (($file = $di->read()) !== false)
if ($file != "." && $file !=
"..")
get_dir_tree("$dir/$file", false);
$di->close();
}
if ($root)
return $tree;
}
?>
----
Server IP: 69.147.83.197
Probable Submitter: 24.99.90.156
----
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/www.php.net/manual/en/function.copy.php
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