PHP-editorjs parse to html

editorjs.php

<?php
    function jsonToHtml($jsonStr) {
        $obj = json_decode($jsonStr);

        $html = '';
        foreach ($obj->blocks as $block) {
            switch ($block->type) {
                case 'paragraph':
                    $html .= '<p>' . $block->data->text . '</p>';
                    break;
                
                case 'header':
                    $html .= '<h'. $block->data->level .'>' . $block->data->text . '</h'. $block->data->level .'>';
                    break;

                case 'raw':
                    $html .= $block->data->html;
                    break;

                case 'list':
                    $lsType = ($block->data->style == 'ordered') ? 'ol' : 'ul';
                    $html .= '<' . $lsType . '>';
                    foreach($block->data->items as $item) {
                        $html .= '<li>' . $item . '</li>';
                    }
                    $html .= '</' . $lsType . '>';
                    break;
                
                case 'code':
                    $html .= '<pre><code class="language-'. $block->data->lang .'">'. $block->data->code .'</code></pre>';
                    break;
                
                case 'image':
                    $html .= '<div class="img_pnl"><img src="'. $block->data->file->url .'" /></div>';
                    break;
                
                default:
                    break;
            }
        }
        
        return $html;
    }
?>