PHP批量去除BOM头代码分享

<?php /*** 去除bom头信息*/header("Content-Type:text/html; charset=utf-8"); $auto = 1; checkdir("D:/wamp/www/sales"); function checkdir($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")." <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, $rest);   return ("<font color=red>发现BOM并且已自动删除</font>");  } else {   return ("<font color=red>发现BOM</font>");  } } else return ("没有发现BOM"); } function rewrite ($filename, $data) { $filenum = fopen($filename, "w"); flock($filenum, LOCK_EX); fwrite($filenum, $data); fclose($filenum); } ?>