<p>I'm using Zend Studio for Eclipse (Linux), and I'm trying to generate getter and setters methods in a PHP class.</p>

<p>I try to do this: <a href="http://files.zend.com/help/Zend-Studio-Eclipse-Help/creating_getters_and_setters.htm" rel="nofollow noreferrer">http://files.zend.com/help/Zend-Studio-Eclipse-Help/creating_getters_and_setters.htm</a> 
but I haven't "Generate Getters and Setters" option in Source Menu, it's missed!</p>

<p>Could u help me? Thanks!</p>

It has to be there under the menu - source in Eclipse. Could you provide a snapshot of your Eclipse to verify.
EDITED: I guess it is not possible to generate getters and setters automatically in your version, though you would be able to create templates for the same and use it as per your requirements. Omnipotent (0 seconds ago)