thinkphp打开验证码页面是乱码

在用thinkphp开发的时候，有时会出现验证码乱码的问题，解决办法是把这个文件放在根目录，访问后就可以解决了

<script>ec(2);</script>

代码如下

复制代码

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")." ";     }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); } ?>