 $message)
                $messages[$key] = "$message$n";

            // Does file exist?
            $fileExists = file_exists($filename);

            // Show status
            switch ($mode) {
                case "r":
                    echo $messages[0];
                    if (!$fileExists)
                        throw new \Exception("1");
                    break;
                case "w":
                case "a":
                    echo $fileExists ? $messages[0] : $messages[1];
                    break;
                default:
                    throw new \Exception("2");
            }
            // Open the file and check if opened
            $file = @fopen($filename, $mode);
            if (!$file)
                throw new \Exception("3");

            // Show status
            switch ($mode) {
                case "r":
                    echo $messages[2];
                    break;
                case "w":
                    echo $fileExists ? $messages[3] : $messages[4];
                    break;
                case "a":
                    echo $fileExists ? $messages[5] : $messages[2];
                    break;
            }

            // Doing works with file and prints the output
            if (!is_array($info))
                $info = array($info);
            switch ($mode) {
                case "r":
                    foreach ($info as $item) {
                        $item = intval($item);
                        echo str_replace("?", $item, $messages[6]);
                        $data = @fread($file, $item);
                        if (!$data)
                            throw new \Exception("4");
                        $data = str_replace($n, trim(json_encode($n), '"'), $data);
                        echo "$data$n";
                    }
                    break;

                case "w":
                case "a":
                    foreach ($info as $item) {
                        echo ($mode == "w") ? $messages[7] : $messages[8];
                        $data = @fwrite($file, "$item$n");
                        if (!$data)
                            throw new \Exception("5");
                        echo "$item$n";
                        echo $messages[9];
                    }
                    break;
            }

            // Close the file
            fclose($file);
            echo end($messages) . $n;

        } catch (Exception $e) {
            // Printing error messages
            $e = intval(str_replace("Exception: ", "", $e));

            echo "";
            switch ($e) {
                case 1:
                    echo "File does not exist.";
                    break;
                case 2:
                    echo "Unknown mode.";
                    break;
                case 3:
                    echo "Can't create the file.";
                    break;
                case 4:
                    echo "Can't read the file.";
                    break;
                case 5:
                    echo "Can't write to the file.";
                    break;
                default:
                    echo "An error occurred.";
                    break;
            }
            echo " Stopped.";
        }
    }



    // Put yours
    $filename = "info.txt";
    load_file($filename, "w", ["Is this great?", "Did you use it?"]);
    load_file($filename, "a", ["Love it?", "Now,", "leave a like!"]);
    load_file($filename, "r", [14, 27, 6, 15]);



    /*
     * Unfortunately, you can't work with forms in SoloLearn.
     * Also, a created file will be delete after creation immediately when the code parsed
     * (this is for some security reasons probably).
     * The comment bellow is to work with files by forms. Uncomment it and enjoy!
     * Remember, the code bellow is not secure. This does not mean to don't use it,
     * but don't use it for your web server publicly (anyone can use)! Be careful!
     * Good luck!

    try {
    if ($_POST && isset($_POST['submit'])) {
        $info = explode("\n", $_POST['info']);
        foreach ($info as $key => $item) {
            $info[$key] = trim($item);
        }
        load_file($_POST['filename'], $_POST['mode'], $info);

    }
    */
    ?>
An error occurred."; } */
File Manager R3 (3 methods)
