[root@localhost ~]# php -v
Failed loading /usr/local/Zend/lib/ZendOptimizer.so: /usr/local/Zend/lib/ZendOptimizer.so: undefined symbol: zend_ptr_stack_push
PHP 4.3.9 (cgi) (built: May 10 2007 05:19:09)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend...