Chaining Static Methods in PHP?

Question

Is it possible to chain static methods together using a static class? Say I wanted to do something like this:

$value = TestClass::toValue(5)::add(3)::subtrac         


        

Answer 1

The most easiest way i have ever found for method chaining from new Instance or Static method of class is as below. I have used Late Static Binding here and i really loved this solution.

I have created a utility to send multiple User Notification on next page using tostr in Laravel.

 false,

        "debug" => false,

        "newestOnTop" => false,

        "progressBar" => false,

        "positionClass" => "toast-top-right",

        "preventDuplicates" => false,

        "onclick" => null,

        "showDuration" => "3000",

        "hideDuration" => "1000",

        "timeOut" => "5000",

        "extendedTimeOut" => "1000",

        "showEasing" => "swing",

        "hideEasing" => "linear",

        "showMethod" => "fadeIn",

        "hideMethod" => "fadeOut"
    ];

    private static $toastType = "success";

    private static $instance;

    private static $title;

    private static $message;

    private static $toastTypes = ["success", "info", "warning", "error"];

    public function __construct($options = [])
    {
        self::$options = array_merge(self::$options, $options);
    }

    public static function setOptions(array $options = [])
    {
        self::$options = array_merge(self::$options, $options);

        return self::getInstance();
    }

    public static function setOption($option, $value)
    {
        self::$options[$option] = $value;

        return self::getInstance();
    }

    private static function getInstance()
    {
        if(empty(self::$instance) || self::$instance === null)
        {
            self::setInstance();
        }

        return self::$instance;
    }

    private static function setInstance()
    {
        self::$instance = new static();
    }

    public static function __callStatic($method, $args)
    {
        if(in_array($method, self::$toastTypes))
        {
            self::$toastType = $method;

            return self::getInstance()->initToast($method, $args);
        }

        throw new \Exception("Ohh my god. That toast doesn't exists.");
    }

    public function __call($method, $args)
    {
        return self::__callStatic($method, $args);
    }

    private function initToast($method, $params=[])
    {
        if(count($params)==2)
        {
            self::$title = $params[0];

            self::$message = $params[1];
        }
        elseif(count($params)==1)
        {
            self::$title = ucfirst($method);

            self::$message = $params[0];
        }

        $toasters = [];

        if(Session::has('toasters'))
        {
            $toasters = Session::get('toasters');
        }

        $toast = [

            "options" => self::$options,

            "type" => self::$toastType,

            "title" => self::$title,

            "message" => self::$message
        ];

        $toasters[] = $toast;

        Session::forget('toasters');

        Session::put('toasters', $toasters);

        return $this;
    }

    public static function renderToasters()
    {
        $toasters = Session::get('toasters');

        $string = '';

        if(!empty($toasters))
        {
            $string .= '';
        }

        Session::forget('toasters');

        return new HtmlString($string);
    }
}

This will work as below.

Toaster::success("Success Message", "Success Title")

    ->setOption('showDuration', 5000)

    ->warning("Warning Message", "Warning Title")

    ->error("Error Message");