Recommendation on PHP encoder please

Hi, my company's looking to buy a PHP encoder to secure the source code. The encoded scripts should be able to run on Solaris platform (Apache webserver), and should only require minimum changes to the server. I looked on Zend Encoder and was ready to suggest it when I realise that the US$ 960 tag is only for a year's license. And I don't think we have the budget to buy the perpetual license. Could anyone recommend other PHP encoder for us? Many thanks, Harry -- Kampanye open-source Indonesia - http://www.DariWindowsKeLinux.com Solusi canggih, bebas ikatan, dan bebas biaya v0sw6Chw5ln3ck4u6Lw5-2Tl6+8Ds5MRr5e7t2Tb8TOp2/3en5+7g5HC - hackerkey.com