【PHP】文件上传限制

【php】文件上传限制上传文件,只判断后缀,貌似还不是很严谨;

/** * 判断文件是否合法 * @param $files * @param $arrCode * @return number|boolean */function checkFileType($files, $arrCode = array()){$file = @fopen($files['tmp_name'], "rb");$bin = @fread($file, 2);fclose($file);$str = @unpack('C2chars', $bin);$code = intval($str['chars1'].$str['chars2']);if(! is_array($arrCode))return $code;return array_key_exists($code, $arrCode);}//Demo$arrCode = array(6063 => 'php',208207 => 'xls',);//如只允许上传php,和xls文件$result = checkFileType($_FILES['file'], $arrCode);