In a quick note from Fractured Realities, Davey Shafik's weblog, he shares his opinion on the claim that Zend Studio 3.5 has "full PHP 5 support"

OK, I would first like to say that Zends claim that Zend Studio 3.5 has "Full PHP 5 support" is crap. They seem to have forgotten to update almost all of the auto-complete stuffs. The following is the additions necessary to have the FULL (more that is documented on PHP.net even) DOM extension auto-complete in ZDE.

Just add this file to the end of $Zend_Install_PathbinphpFunctions4.php (not phpFunctions.php). I will possibly create more of these as I need them, in the mean time - Happy Editing!

The idea with this file is to add more of the functions that the Zend folks seemed to overlook with the DOM extension. It's cool that you can extend it like this, though - even if it does mean more work for the developer using the product.