URI.encode_www_form

You're seeing just the function encode_www_form, go back to URI module for more information.

Specs

encode_www_form(binary()) :: binary()

Encodes string as "x-www-form-urlencoded".

Note "x-www-form-urlencoded" is not specified as part of RFC 3986. However, it is a commonly used format to encode query strings and form data by browsers.

Example

iex> URI.encode_www_form("put: it+й")
"put%3A+it%2B%D0%B9"