laravel 5 - Getting base_url into a PHP file of symfony3 framework -

i beginner symfony framework , want base url of

symfony3 framework view file. did r&d , how base url twig file using this.

 {{ app.request.getschemeandhttphost() }}

but view

not twig file it .php file

so don't know how use base url in view .php file.

i base url head.blade.php file of laravel framework using:-

<?php echo url::to('/'); ?>

i want symfony3 framework.

as explained on the doc : in symfony have create routes.

/**  * @route("/", name="site_home")  */ public function homeaction() {     // ... }

in twig, can call routes :

{{ path('site_home') }}

you can route in controller , pass view :

$homeurl = $this->get('router')->generate('site_home');

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