If you are looking for different Ubuntu IDE or Linux PHP IDE, then you have come to the right place.
Ubuntu IDE, Linux PHP IDE
If you are looking for free Ubuntu IDE or Ubuntu Integrated Development Environment, to make you do coding or programming in your Ubuntu, then I would prefer you to go through the following post, to make you download and install some different and good PHP IDEs for your Ubuntu. So far, I have found Geany as a good, light weight and free PHP Editor, which will make me feel good while programming.
Ubuntu PHP Editor
Following is the list of some good PHP Editors, which you can download and install easily:
Hope this will help you finding a good PHP Editor for your Ubuntu.
If you know some other good and free Ubuntu PHP Editors or IDEs, please mention in the comments here.