去掉utf8 bom
<?php if ( isset($_GET['dir'] )){ //设置文件目录 $basedir=$_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); } ?>