Date: 04/04/07 (Java Web)    Keywords: php

I tried using eAccelerator alone and then integrated it with PHP Zend Optimizer for better performance. The result was surprising. eAccelerator alone came up slightly ahead in several tests and was at least equal in performance to eAccelerator with Zend Optimizer combined, even with further optimization to Zend default setup. I used eAccelerator with 128 MB [...]

Source: http://blog.taragana.com/index.php/archive/php-performance-with-eaccelerator-versus-eaccelerator-with-php-zend-optimizer/