I do not understand your question. PHP as a server type is still available in Flash Builder 4.5.1 just as it has always been.
What makes you think it's missing?
I used to be able to develop php code in the builder just like you can in
eclipse or dreamweaver but now you cannot and can only do it in a simple
text editor. It's a free plugin but it's not able to be installed in the
new flash Builder 4+.
Ah...I haven't noticed that. I installed Flash Builder as part of CS 5.5 Master Collection so I edit all of my PHP using DreamWeaver. That is...from within FB I click a PHP script and it automatically launches in DreamWeaver.
I really like that.
But yeah, I could see where you might not like that your familiar PHP editor was removed.
This is just a guess but it could be that it was removed because Zend sells a branded (their brand) of Fash Builder called Flash Builder for PHP. That version of FB, which I'm told has been known to break the licenses of your other Adobe Suite products when installing on the same PC, comes with a PHP edtior called Zend Studio (I think...you can find out more at www.zend.com). But you have to purchase a license, think it's an annual subscription, to Zend Studio for something like $350.
For our shop, it was more cost effective to purchase the Master Collection license and use DreamWeaver. There was nothing PHP specific that Zend's version could do that we couldn't do with Adobe's own, unmodified version of Flash Builder.
An awesome understanding and response.
I also can just click on it and launch dreamweaver but i liked having 1
place for all like i am used to in eclipse. Plus this requires extra
licenses on each machine I am synced with.
My frustration is that they purposely disabled an ability so they can sell
a custom version of the php builder.