hash64()
function hash64($text, $len = 28)
Returns a hash of the input, in a URL-safe base-64 format. This is intended to be added to URLs for CSS or JavaScript file, to create a "cache killer".
From Zenario 7.0.0 onwards.
$text
The text to create a hash of.
$len
How long the output should be. The default value is 28, which is also the maximum length.