Twig Components / Methods / url_encode

url_encode is a Twig filter to encode a given string as URL segment or an array as query string:

{{ "path-seg*ment"|url_encode }}
{# outputs "path-seg%2Ament" #}

{{ "string with spaces"|url_encode }}
{# outputs "string%20with%20spaces" #}

{{ {'param': 'value', 'foo': 'bar'}|url_encode }}
{# outputs "param=value&foo=bar" #}

Note: Internally, Twig uses the PHP rawurlencode or the http_build_query function.

Source: Twig