A class to render and create html/twig templates

Templating.php

<?php

/**
 * This class allows to :
 * - render templates from a basePath
 * - create/update templates from nothing or using an existing template as a base
 * 
 */
class Templating
{
    /**
     * @var string
     */
    public $basePath = null;
    
    /**
     * @var HtmlCleaner
     */
    private $cleaner = null;

    /**
     * @var string
     */
    public $identifier = null;

    public function __construct(HtmlCleaner $cleaner, string $basePath, string $identifier = "{identifier}")
    {
        $this->basePath   = $basePath;
        $this->cleaner    = $cleaner;
        $this->identifier = $identifier;
    }

    public function render(string $templateName): string
    {
        /**
         * @var string
         * Relative template path
         */
        $templatePath = null === $this->basePath ?
            $templateName : "{$this->basePath}/{$templateName}";

        // Start the buffer
        ob_start();

        // Load the template
        require $templatePath;

        // Return the template content
        return ob_get_clean();
    }

    public function createTemplate(string $html, string $templateName)
    {
        /**
         * @var string relative template path
         */
        $templatePath = "{$this->basePath}/{$templateName}";
        
        $safeHtml = $this->cleaner->cleanTags($html, ["script"]);

        file_put_contents($templatePath, trim($safeHtml));
    }

    /**
     * Insert an html string inside a template
     * The twig template file will be created or updated
     */
    public function createTemplateFrom(string $baseTemplateName, string $targetTemplateName, string $html): void
    {
        $baseHtml = $this->render($baseTemplateName);
        $newHtml = str_replace($this->identifier, $html, $baseHtml);

        $this->createTemplate($newHtml, $targetTemplateName);
    }

    /**
     * Transforms an html string with brackets
     * into a twig string with mustaches
     *
     * @param  string $html
     * @return string
     */
    private function htmlToTwig(string $html) : string
    {
        // Search for brackets
        $pattern = "/\[(\S*)\]/s";

        // Replace brackets by mustaches
        $twig = preg_replace($pattern, '{{ ${1} }}', $html);

        return $twig;
    }
}