Devise\Templates\TemplatesRepository::compileAllUsedVars PHP Method

    public function compileAllUsedVars()
    {
        $templatesArr = $this->Config->get('devise.templates');
        $usedVars = array();
        $usedClassMethod = array();
        foreach ($templatesArr as $templateName => $template) {
            if (isset($template['vars']) && count($template['vars'])) {
                foreach ($template['vars'] as $varName => $classMethod) {
                    $params = '';
                    if (!is_string($classMethod)) {
                        reset($classMethod);
                        $key = key($classMethod);
                        $params = str_replace('}', '', str_replace('{', '', implode(', ', $classMethod[$key])));
                        $classMethod = $key;
                    }
                    if (!in_array($classMethod, $usedClassMethod)) {
                        $path = $templateName . '.vars.' . $varName;
                        $classMethod = str_replace('.', '->', $classMethod);
                        if (($lastSlashPos = strrpos($classMethod, '\\')) !== false) {
                            $classMethod = '...' . substr($classMethod, $lastSlashPos);
                        }
                        $usedClassMethod[] = $classMethod;
                        $name = '$' . $varName . ' = ' . $classMethod . '(' . $params . ')';
                        $usedVars[$path] = $name;
                    }
                }
            }
        }
        ksort($usedVars);
        return $usedVars;
    }