ywf.php

<?php
//by shopnc.club 运维舫 专注运维

if (isset($_GET['dir'])){ //config the basedir
 $basedir=$_GET['dir'];
}else{
 $basedir = '.';
} 

$auto = 1; 

checkdir($basedir);

function checkdir($basedir){
 if ($dh = opendir($basedir)) {
  while (($file = readdir($dh)) !== false) {
   if ($file != '.' && $file != '..'){
    if (!is_dir($basedir."/".$file)) {
     echo "filename: $basedir/

$file ".checkBOM("$basedir/$file")." <br>";
    }else{
     $dirname = $basedir."/".

$file;
     checkdir($dirname);
    }
   }
  }
 closedir($dh);
 }
}

function checkBOM ($filename) {
 global $auto;
 $contents = file_get_contents($filename);
 $charset[1] = substr($contents, 0, 1);
 $charset[2] = substr($contents, 1, 1);
 $charset[3] = substr($contents, 2, 1);
 if (ord($charset[1]) == 239 && ord($charset[2]) == 187 &&

 ord($charset[3]) == 191) {
  if ($auto == 1) {
   $rest = substr($contents, 3);
   rewrite ($filename, $rest);
   return ("<font color=red>BOM found, 

automatically removed.</font>");
  } else {
   return ("<font color=red>BOM found.

</font>");
  }
 }
 else return ("BOM Not Found.");
}

function rewrite ($filename, $data) {
 $filenum = fopen($filename, "w");
 flock($filenum, LOCK_EX);
 fwrite($filenum, $data);
 fclose($filenum);
}
?>