A complete example of batch deletion of Trojan files and batch replacement of page content in PHP-PHP Tutorial-php.cn

The example in this article describes the method of batch deletion of Trojan files and batch replacement of page content in PHP. Share it with everyone for your reference, the details are as follows:

<?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。 set_time_limit(3600); //脚本运行时间 ?> <?php 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($file)) { echo "$v
"; hx_dirtree($file); }else{ $ext=substr(strrchr($v,"."), 1); if( in_array($ext , $arrext) ){ echo "$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 '
'; } } } $d->close(); } function hx_dealdir($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 , $arrext) ){ echo "$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 '
'; } } } closedir($dh); } } //把生成文件的过程写出函数 function tofile($file_name,$file_content){ if (is_file ($file_name)){ @unlink ($file_name); } $handle = fopen ($file_name,"w"); if (!is_writable ($file_name)){ return false; } if (!fwrite ($handle,$file_content)){ return false; } fclose ($handle); //关闭指针 return $file_name; } ?>        起始根路径：   点表示当前目录，末尾不要加/ 包含此目录下所有目录  
   文件扩展名：   多个请用|隔开  
    内容替换选项： 使用正则表达式  
  替换内容类默认使用字符串替换，也可以使用正则表达式(需勾选)。"替换为"不填写的话，就表示删除"替换内容"。  
   替换内容：   替 换 为：

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