TEST.php

<?php
interface Info
{
    public function channelMessage();
}

abstract class Live
{
    const RANGE = 10;
    protected $point = 0;

    abstract protected function loginchat();
    
    public function onLive()
    {
        $this->point += self::RANGE * 10;
        echo $this->point . "\r\n";
    }

    public final function offLive()
    {
        $this->point += self::RANGE * 1;
        echo $this->point . "\r\n";
    }

}

class Twitch extends Live implements Info
{  
    private $channelname;

    public function __construct($name)
    {
        $this->channelname = $name;
        echo "Welcome to " . $this->channelname . " channel\r\n";
    }

    protected function loginChat()
    {
        echo "Log in " . $this->channelname . " chat\r\n";
    }

    public function channelMessage()
    {
        $this->loginChat();
        echo "This is " . $this->channelname . " \r\n";
    }

    public static function liveType()
    {
        echo "TWITCH \r\n";
    }
}

class FbLive extends Live implements Info
{  
    //計算觀看人數
    private $num = 0;

    public function __construct()
    {
        $this->num++;
    }

    protected function loginChat()
    {
        echo "welcome fb live chat\r\n";
    }

    public function channelMessage()
    {
        $this->loginChat();
        echo "This num " . $this->num . " \r\n";
    }

    public static function liveType()
    {
        echo "FaceBook \r\n";
    }
}

$fbLive = new FbLive();

$fbLive->onLive();
$fbLive->channelMessage();
$fbLive->offLive();
fbLive::liveType();

$twitch = new Twitch('yuyu0321');

$twitch->onLive();
$twitch->channelMessage();
$twitch->offLive();
Twitch::liveType();

• class name 要大寫

class live

class Live

• const 小寫

CONST RANGE = 10;

const RANGE = 10;

• 這個不需要

?>

• 所有的 method 都要有 public, protected, private，包含 construct
• 換行也可以使用 PHP_EOL
• method 間隔一行, properties 間不用
• properties 和 methods 間隔一行
• . 前後要空隔

  echo $this->point."\r\n";
  echo $this->point . "\r\n";