README for zend_optimizer REQUIREMENTS PRE-INSTALL Download pakage from http://www.zend.com/products/zend_optimizer POST-INSTALL Add this lines to /etc/php.ini to enable zend optimizer: zend_extension=/usr/lib/php/extensions/Optimizer/lib/ZendOptimizer.so zend_extension_manager.optimizer=/usr/lib/php/extensions/ZendExtensionManager.so zend_extension_ts=/usr/lib/php/extensions/Optimizer_TS/lib/ZendOptimizer.so zend_extension_manager.optimizer_ts=/usr/lib/php/extensions/ZendExtensionManager_TS.so zend_optimizer.optimization_level=15 zend_optimizer.version=3.0.1 ; set memory limit to some reasonable value: memory_limit=100M and this to disable: zend_optimizer.enable_loader = 0 RESOURCES