<?php  
/*检测并清除BOM*/   
/*www.325.hk*/
if(isset($_GET['dir'])){
$basedir=$_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);  
 }   
}  
}
}
}
 
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);
}
 
?>