PHP batch removal BOM header code sharing_PHP tutorial

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/**

* 去除bom头信息

*/

header("Content-Type:text/html; charset=utf-8");

$auto = 1;

checkdir("D:wampwwwsales");

function checkdir($basedir){

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

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

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

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

echo "文件名称: $basedir/$file ".checkBOM("$basedir/$file")."
";

}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 ("发现BOM并且已自动删除");

} else {

return ("发现BOM");

}

}

else return ("没有发现BOM");

}

function rewrite ($filename, $data) {

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

flock($filenum, LOCK_EX);

fwrite($filenum, $data);

fclose($filenum);

}

?>