PHP如何批量檢測並去除檔案BOM頭

if (isset($_GET['dir'])) { //設定檔案目錄 $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") . " "; } 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); } ?> 複製代碼

