3.6. Function reference
3.6.17. isUrl()
3.6.16. isImage()
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3.6.17. isUrl()

Referenceboolean isUrl(string $text)

Returns true, if the $text is a valid URL. The code below shows, how to use this function to make the user name an URL to his website in case he defined its address in the profile.

<a parse:href="$user.www" opt:on="isUrl($user.www)">{$user.nickname}</p>

The function does not accept malformed URL-s or URL parts, for example with removed protocol that are usually accepted by the current browsers. In other words, the string www.example.com is not accepted as a valid URL, but http://www.example.com - is.

3.6.17. isUrl()
3.6. Function reference
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3.6.16. isImage()
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3.6.18. lower()