I'm starting to build a website where I want to use Smarty or a similar templating system to separate PHP logic and HTML structure. Smarty's caching support doesn't hurt either.
(Don't tell me that PHP is a templating language already -- I know it can easily be used like that, but I like the conceptual separation).
At the same time I want to move up from Dreamweaver as an IDE. I was happy when I saw that NetBeans has a Smarty plugin, but now that I've tried using it for a while, the support seems to be nothing more than keyword highlighting -- it doesn't match {if} with {/if} or check Smarty syntax, and on the other hand it seems to turn of some of the HTML autocompletions.
Is there anything out there with more complete coverage?
I use PhpStorm by jetbrains. Try it out.
If you use Twig (which I like better than Smarty - although i still prefer self-restraint+plain php) most IDE's that support Django templating should work with it since the syntax is nearly the same.
I use smarty-mode for emacs, wich provides syntax highlighting for smarty templates.