Weblabor

<?php

abstract class HTMLtag {

    protected $content=array();
    protected $options=NULL;

    function __construct($content=NULL,$opt=NULL){
        $this->initialize();
        if(isset($content)){ $this->add($content); }
        if(isset($opt)){ $this->options=$opt; }
    }

    function add($content){
        $this->content[]=$content;
    }

    function initialize(){
        $this->content=array();
    }

    function show(){
        echo $this->tagOpen();
        foreach($this->content as $v){
            if($v instanceof HTMLtag){ $v->show(); }
            else { echo $v; }
        }
        echo $this->tagClose();
    }

    protected function tagOpen(){
        return '<'.get_class($this).' '.$this->options.'>';
    }

    protected function tagClose(){
        return '</'.get_class($this).'>';
    }
}

class HTML1tag extends HTMLtag {
    protected function tagOpen(){
        return '<'.get_class($this).' '.$this->options.' />';
    }
    
    protected function tagClose(){
        return "";
    }

class Div extends HTMLtag {
}

class Body extends HTMLtag {
    
}

class BR extends HTML1tag{
    
}