文件夹复制 (win&linux皆可)

/**
* 复制文件夹 
eg:将D:/wwwroot/下面wordpress复制到
D:/wwwroot/www/explorer/0000/del/1/
末尾都不需要加斜杠，复制到地址如果不加源文件夹名，
就会将wordpress下面文件复制到D:/wwwroot/www/explorer/0000/del/1/下面
* $from = 'D:/wwwroot/wordpress';
* $to = 'D:/wwwroot/www/explorer/0000/del/1/wordpress';
*/
function copy_dir($source, $dest){
$result = false;
if (is_file($source)) {
if ($dest[strlen($dest)-1] == '/') {
$__dest = $dest . "/" . basename($source);
} else {
$__dest = $dest;
} 
$result = @copy($source, $__dest);
//echo iconv( $config['app_charset'],$config['system_charset'], $source);
@chmod($__dest, 0755);
}elseif (is_dir($source)) {
if ($dest[strlen($dest)-1] == '/') {
$dest = $dest . basename($source);
@mkdir($dest);
@chmod($dest, 0755);
} else {
@mkdir($dest, 0755);
@chmod($dest, 0755);
} 
$dirHandle = opendir($source);
while ($file = readdir($dirHandle)) {
if ($file != "." && $file != "..") {
if (!is_dir($source . "/" . $file)) {
$__dest = $dest . "/" . $file;
} else {
$__dest = $dest . "/" . $file;
} 
$result = copy_dir($source . "/" . $file, $__dest);
} 
} 
closedir($dirHandle);
} else {
$result = false;
} 
return $result;
}