What is the best PHP and CSS editor?

Dreamwear is the best

PHPDesigner.
It has auto-complete for all keywords.
full references for HTML CSS JS PHP

Sublime Editor has some great features you don't find on most editors: * Multiple selections * Goto Anything * Command Palette and many more: http://www.sublimetext.com/ Dreamweaver is great, but it's not free and Adobe support is not one of the best in the world.
I also had a great experience with Komodo Edit, but it's hungry in resources.

Dreamweaver is the best.
It has lot of features like auto completion etc....

the first you must knowed what's application familiar with you, some time more people familiar with DreamWeaver but another people familiar with Ms.
Frontpage, or antoher application.

I came across this link http://www.warriorforum.com/programming-talk/666229-please-suggest-me-good-php-css-javascript-editor.html which could be useful for getting information related to PHP and CSS editor reviews.

During my last 15 years of web designing, I have worked on almost every web design software in Windows and Linux environment...
Trust me I've never found anything better than Macromedia Dreamweaver which is now "Adobe Dreamweaver".
Less resource hungry, tons of features with the support of thousands add-on in shape of Extensions (Adobe Exchange).
Use it with full capacity, Believe me you'll start loving it.

Eclipse, Aptana Studio.
Dreamweaver I won't recommend as there are alignment issues in that, most of the sites developed by Dreamweaver won't be similar in all types of browsers.

If you're seasoned web developer then you will be happy with Dreamweaver because it has auto completion feature.
But it's very heavy and sometime it puts stupid html tags when you used design view.
For regular and experienced developer Notepad++, Programmers Notepad and Sublime Editor are awesome choice.
They are very lightweight.
These editors have plugins so you can use them to enable some features like auto HTML tag closing and much more..
I used Notepad++ from last 5 years and still very happy with it.

Dreamweaver is not free.
There instead other free IDE such as Netbeans, Eclipse, ...
They fully support autocompletion, remote debugging (xdebug for example), and so many other interesting features.

Well, every Text Editor has aim and objective.
And, People should no that Text Editor is different from IDE.
Dreamweaver is and IDE to collect you.
From Linuc Journal March 2013 - Page13.
VIM - 3% Other 18% Gedit: 14% JEdit 11% Kate 6% Komodo Edit: 4% Textmate: 3%.
However This is just opion of some people.
But, Notepad++ is one of the best open Source Text Editor.