Returns true if a string is an external URL.
google_url: http://google.com/entry_url: /wafflesnot_a_url: bacon{{ if google_url | is_external_url }}{{ if entry_url | is_external_url }}{{ if not_a_url | is_external_url }}@if (Statamic::modify($google_url)->isExternalUrl()->fetch()) ... @endif@if (Statamic::modify($entry_url)->isExternalUrl()->fetch()) ... @endif@if (Statamic::modify($not_a_url)->isExternalUrl()->fetch()) ... @endiftruefalsefalse
