After PHPEclipse and PDT, a new PHP IDE based on Eclipse is available: Aptana Studio.
Read more about it in Federico Cargnelutti’s post on PHP::Impact ( [str Blog] ).
I’ve had a look at the screencast available on the Aptana site and in my opinion the only neat difference to PDT is the “Generate Getters and Setters…” option. As you could suspect, it generates get and set methods based on a selection of existing class properties.
Apart from that, the majority of features shown also exist in PDT.
But it is only version 1.0 so who knows what future versions may bring.