Convert html string to markdown

converter.php

<?php

class MarkdownConverter 
{   
    protected = $original;
    protected = $formatted;

    public function convert(string $html) 
    {
        $this->original = $html;

        $this->convertParagraphs();

        /* 
        Asi quedaria al final: 

        $this->convertParagraphs()
             ->convertImages()
             ->convertWhatever()
        */
        
        return $this->formatted;
    }
    
    public function convertParagraphs() 
    {
        $pattern = '/<p\s?.*?>(.*?)<\/p>/i';
        $replacement = '<parrafo>${1}</parrafo>';
    
        $this->formatted = preg_replace($pattern, $replacement, $this->original);
        
        return $this;
    }

    public function convertImages() 
    {
        // TODO: implementar esta funcionalidad
        
        return $this;
    }
}