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."https://www.jb51.net/".$file)) { echo "文件名称: $basedir/$file ".checkBOM("$basedir/$file")." <br>"; }else{ $dirname = $basedir."https://www.jb51.net/".$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); } ?>