ip2country
Maps an IP address to a country using the MaxMind GeoIP2 database.
is_letsencrypt_valid_hostname
Test if a hostname can be used for a Let’s Encrypt certificate.
gravatar_code
Calculate the gravatar code for an e-mail address:
ip2geo
Maps an IP address to information about that country.
format_dispatch_controller_option
Format dispatch controller options.
format_dispatch_path_element
Format dispatch path element so variables will be more visible.

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