Posted 28 November 2011 - 12:51 PM
Mac has similar IDE options like windows. So most of the IDE's should work. Take case of Eclipse, it works on mac and as macs have enough RAMs with their box, i don't think you'll face any issue with the resources in case of it. Eclipse requires PDT plugin that lets you edit the php files on it. You have to download that plugin on your own from the eclipse repository in order to compile your program. By default eclipse has support for only java and additional languages require their own plugins, so it is obvious that eclipse will need plugin in order to run.
Aptana is new range of IDE's which are made on top of the eclipse. They're reducing the necessary part of the eclipse and making simple IDE to run the essentials. They also support java, ruby and php in their IDE. So for sure aptana will work for you. Note - aptana has paid and free versions so look if you can do witht he free version of the IDE.
Komodo a commercial IDE that lets you run python,php and perl easily. They do have a free version called edit but i don't know how much useful is that. You just have to see if it is that you need on mac. Netbeans is another free IDE that i can recommend to you but it's upto you if you're comfortable with IDE's like eclipse and netbeans for php.
At the end all i can say is that if you can afford mac then it is better to buy an IDE so that you can get your work done quickly instead of hopping from one feature to another. It just saves time and lets you focus on work instead of manaing free software in its alpha behavior. Hope this helps.