簡單的 session 類別實現

Session.php

interface SessionInterface {
    public function start();
    public function set($key, $value);
    public function get($key, $default = null);
    public function remove($key);
    public function all();
}

class NativeSession implemenet SessionInterface {
    public function start() {
      return session_start();
    }
    
    public function set($key, $value) {
        $_SESSION[$key] = $value;
        
        return $this;
    }
    
    public function get($key, $default = null) {
        return isset($_SESSION[$key]) ? $_SESSION[$key] : $default;
    }
    
    public function remove($key) {
        unset($_SESSION[$key]);
        
        return $this;
    }
    
    public function all(){
      return $_SESSION;
    }
}

class CookieSession implemenet SessionInterface {
    public function start() {
    }
    
    public function set($key, $value) {
        $_COOKIE[$key] = $value;
        
        return $this;
    }
    
    public function get($key, $default = null) {
        return isset($_COOKIE[$key]) ? $_COOKIE[$key] : $default;
    }
    
    public function remove($key) {
        unset($_COOKIE[$key]);
        
        return $this;
    }
    
    public function all(){
      return $_COOKIE;
    }
}

class ArraySession implemenet SessionInterface {
    public $data = [];

    public function start() {
    }
    
    public function set($key, $value) {
        $this->data[$key] = $value;
        
        return $this;
    }
    
    public function get($key, $default = null) {
        return isset($this->data[$key]) ? $this->data[$key] : $default;
    }
    
    public function remove($key) {
        unset($this->data[$key]);
        
        return $this;
    }
    
    public function all(){
      return $this->data;
    }
}