檔案讀取和寫入

    // 資料來源：httpsss://www.w3schools.com/php/php_file_open.asp
    function File_Read($filename){
        $myfile = fopen($filename, "r") or die("Unable to open file!");
        $dat1=fread($myfile,filesize("webdictionary.txt"));
        fclose($myfile);
        return $dat1;
    }

    // 寫入檔案
    // 資料來源：httpsss://www.w3schools.com/php/php_file_create.asp
    function File_Write($filename,$txt){
        $myfile = fopen($filename, "w") or die("Unable to open file!");
        fwrite($myfile, $txt);
        fclose($myfile);
    }