//清除Bom节点

$basedir = str_replace('/clearBOM.php','',str_replace('\\','/',dirname(__FILE__)));

$auto = 1;

checkdir($basedir);

function checkdir($basedir){

if ($dh = opendir($basedir)) {

while (($file = readdir($dh)) !== false) {

if ($file != '.' && $file != '..'){

if (!is_dir($basedir.'/'.$file)) {

$filename = $basedir.'/'.$file;

echo 'filename:'.$basedir.'/'.$file.checkBOM($filename).'
';

} 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 'BOM found,automatically removed.';

} else {

return 'BOM found.';

}

} else {

return 'BOM Not Found.';

}

}

function rewrite ($filename, $data) {

$filenum = fopen($filename, 'w');

flock($filenum, LOCK_EX);

fwrite($filenum, $data);

fclose($filenum);

}

?>

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