php驗證碼顯示亂碼,ThinkPHP打開驗證碼頁面顯示亂碼的解決方法

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);

}

?>