XF 2.1 parsing xf template tags inside php

[navinjoseph]

Is there a way where we can parse the XF template tags inside php for example if I had store this particular tag <xf:js src="foo.js"></xf:js> and call this via a callback tag how do I parse it to <script src="foo.js"></script> is there some sort of function to this ? because right now it just shows the tag without parsing.