DevFish

protected function generatePostText($content)
    {
        $doc = new \DOMDocument('1.0');
        foreach ($content['content'] as $node) {
            $domElement = $this->nodeToDom($node, $doc);
            if ($domElement !== null) {
                $doc->appendChild($domElement);
            }
        }

        return html_entity_decode($doc->saveHTML());
    }



protected function nodeToDom($node, $doc)
    {
        $elementNode = null;
        if (is_string($node)) {
            return $doc->createTextNode($node);
        }
        if (isset($node['tag'])) {
            $elementNode = $doc->createElement($node['tag']);
            if (isset($node['attrs'])) {
                foreach ($node['attrs'] as $attrName => $attrValue) {
                    if ($attrName === 'src' && $node['tag'] === 'img') {
                        if ($attrValue[0] === '/') {
                            $attrValue = "http://telegra.ph{$attrValue}";
                        }
                    }
                    $elementNode->setAttribute($attrName, $attrValue);
                }
            }
        }
        if (isset($node['children'])) {
            foreach ($node['children'] as $child) {
                $childNode = $this->nodeToDom($child, $doc);
                if ($childNode !== null) {
                    $elementNode->appendChild($childNode);
                }
            }
        }
        return $elementNode;
    }