Gets all the variables from a .mustache template file with it's nested includes variables.

templateExample.php

<?php
class Helper
{
    /**
	 * Finds all mustache template tokens ex:
	 * {{> components/templates/email/includes/email-tr-spacer-thin }}
	 * {{# deliveryAddress }}
	 * {{^ deliveryAddress }}
 	 * {{{ deliveryAddressReadable }}}
 	 * {{ deliveryAddressReadable }}
	 * {{/ deliveryAddress }}
	 */
	const HANDLEBARS_VARIABLE_REGEX = "/[\\{]?\\{\\{(.*?)[\\}]?\\}\\}/";

	/**
	 * @param string $mustacheTemplate
	 * @return array
	 */
	protected function getAllTemplateVariables($mustacheTemplate)
	{
		$templateContent = file_get_contents($this->app['view.finder']->find(trim($mustacheTemplate)));
		preg_match_all(self::HANDLEBARS_VARIABLE_REGEX, $templateContent, $matches);

		$templateVariables = array_map(function($variable) {
			// Has included template
			if ($variable[0] === '>') {
				return $this->getAllTemplateVariables(str_replace('/', '.', substr($variable, 2, strlen($variable) - 2)));
			}

			return trim($variable);
		}, $matches[1]);

		return $templateVariables;
	}
}

NOTE: This is for laravel so the way it finds a View is highly opinionated for Laravel 4 at this stage. This is just a little code dump for it.