I've come across three situations where code insight lets me down (which are supported by other packages):

If I have instatiated a class, passing another object as a property, I cannot reach the methods of that object: e.g.: $this->ObjDateHelp->MakeADay() Code insight doesn't find the method MakeADay and pressing CNTRL-SPACE generates a message that property $this-ObjDateHelp was not found. The instant error check nor the debugger see this as an error however.

Defining a string in which I want to use a method, the method is not in the code insightlist. eg: $row[$counter]="<TR><TD>$this->MakeAMessage($today)</TD></TR>" If you press CNTRL SPACE typing the first part of the method, you will only see variabels in the list and no methods.

It would be an advantage if certain options would be supported, as extract($my_array, EXTR_OVERWRITE), I always forget how the exact text of the options are and was used to an editor that generated an optionslist.

So I would put these issues on the wish list.

For the rest: great IDE

Code Insight finds all the properties of a class if they are defined appropriately. For example:
or php'4 way:


Probably code insight was unable to find instance of what _class_ you used to assign to it
Indeed, it's not always possible to recognize what you assign to a variable or property. If it is an instance of a class or a string or an integer value etc, even guru-assisted looking at the php script does not always gives right results, what to say about an IDE? It's all caused by php language typeless nature.
To improve the situation, you may want to add TYPE HINTs in your code. Read FAQ topic dedicated to this problem http://forum.nusphere.com/tip-type-hints-t1563.html

ddmitrie has a good point - look at the screenshot below

works fine in this example, because the code insight is given enough info to figure out the true type of the child. BUt it is not always the case of course