php 批量替换程序的具体实现代码

代码如下:
代码如下:
<?php
/***************************************************************************
batch-replace, v1.1
***************************************************************************
file: batch-replace_utf8.php
functionality: 本程序可以扫描指定目录的所有文件，进行内容替换。可用于被批量挂马的删除以及批量更新页面某些内容。
本程序适用于对UTF-8的页面进行修改。

/***************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
***************************************************************************/

set_time_limit(3600);

if($_POST['Submit']=='开始执行操作'){
$dir = $_POST['searchpath'];
$shortname = $_POST['shortname'];
$isall = $_POST['isall'];
$isreg = $_POST['isreg'];

if (!get_magic_quotes_gpc()) {
$sstr = $_POST['sstr'];
$rpstr = $_POST['rpstr'];
} else {
$sstr = stripslashes($_POST['sstr']);
$rpstr = stripslashes($_POST['rpstr']);
}

//分析shortname
$arrext = explode ("|",$shortname);

if (!is_dir($dir)) return;
if ($sstr == '') return;

//把末尾的/去掉
if(substr($dir,-1)=='/') $dir = substr($dir,0,strrpos($dir,"/"));

//罗列所有目录
if ($isall == 1){
hx_dirtree($dir);
}else{
hx_dealdir($dir);

}

exit();
}

function hx_dirtree($path="."){
global $sstr,$rpstr,$isreg,$arrext;

$d = dir($path);
while(false !== ($v = $d->read())) {
if($v == "." || $v == "..") continue;
$file = $d->path."/".$v;
if(is_dir($file)) {
echo "<p>$v</p>"; hx_dirtree($file);
}else{
$ext=substr(strrchr($v,"."), 1);
if( in_array($ext , $arrext) ){
echo "<li>$file ";
$body = file_get_contents($file);
if($isreg == 1){
$body2 = preg_replace($sstr, $rpstr, $body);
}else{
$body2 = str_replace($sstr, $rpstr, $body);
}
if($body != $body2 && $body2 != ''){
tofile($file,$body2);
echo ' OK';
}else{
echo ' NO';
}
echo '</li>';
}
}
}
$d->close();
}

function hx_dealdir($dir){
global $sstr,$rpstr,$isreg,$arrext;
if ($dh = opendir($dir)) {
while (false !== ($file = readdir($dh))) {
if(filetype($dir.'/'.$file)=='file'){

$ext=substr(strrchr($file,"."), 1);
if( in_array($ext , $arrext) ){

echo "<li>$file ";
$body = file_get_contents($dir.'/'.$file);
if($isreg == 1){
$body2 = preg_replace($sstr, $rpstr, $body);
}else{
$body2 = str_replace($sstr, $rpstr, $body);
}
if($body != $body2 && $body2 != ''){
tofile($dir.'/'.$file,$body2);
echo ' OK';
}else{
echo ' NO';
}
echo '</li>';
}