Сохранение в конфиг массива

if ($action == "dosavesyscon") {
    if ($_REQUEST['user_hash'] == "" or $_REQUEST['user_hash'] != $dle_login_hash) {
        die("Hacking attempt! User not found");
    }
    
    if (is_array($test_config))
    $save_con = $_POST['save_con'];
    
    $save_con['test_1']  = $_POST['test_1'];
    $save_con['test_2']  = $_POST['test_2'];
    $save_con['test_3']  = $_POST['test_3'];
    $find[]                 = "'\r'";
    $replace[]              = "";
    $find[]                 = "'\n'";
    $replace[]              = "";
    
    $handler = fopen(ENGINE_DIR . '/data/test_config.php', "w");
    fwrite($handler, "<?PHP \n\n//System Configurations\n\n\$test_config = array (\n\n'version' => \"1.0\",\n\n");
    foreach ($save_con as $name => $value) {
        fwrite($handler, "'{$name}' => \"{$value}\",\n\n");
    }
    fwrite($handler, ");\n\n?>");
    fclose($handler);

    clear_cache();

    msg("info", $lang['opt_sysok'], "<font color=\"green\">$lang[opt_sysok_1]</font><br /><br /><a class=\"btn btn btn-red\" href=$PHP_SELF?mod=test>$lang[db_prev]</a>");

showRow("test_1", "test_1", "<input class=edit type=text style=\"text-align: center;\" name=\"save_con[test_1]\" value=\"{$test_config['test_1']}\" size=10 />");
showRow("test_2", "test_2", "<input class=edit type=text style=\"text-align: center;\" name=\"save_con[test_2]\" value=\"{$test_config['test_2']}\" size=10 />");
showRow("test_3", "test_3", "<input class=edit type=text style=\"text-align: center;\" name=\"save_con[test_3]\" value=\"{$test_config['test_3']}\" size=10 />");

<?PHP 

//System Configurations

$test_config = array (

'version' => "1.0",

'test_1' => "1",

'test_2' => "1",

'test_3' => "1,2,3",

);

?>

'test_3' => "1,2,3",

'test_3' => array(1,2,3),