why php not running ?

hi all. i installed php5_extensions on my system (Freebsd5.4) please look the lines below and tell me where i am doing something wrong. [root@localhost] -> [~]#php /*hit the tab*/ php php-config phpize [root@localhost] -> [~]#php a simple php code: [root@localhost] -> [~]#cat first.php <%php echo "Hello World!"; %> [root@localhost] -> [~]# /* chmod a+x first.php*/ when trying to run the code : [root@localhost] -> [~]#php first.php PHP Warning: Method panda::__set() must take exactly 2 arguments in Unknown on line 0 Segmentation fault (core dumped) [root@localhost] -> [~]# whats wrong ? first time i met this problem dont know how to solve and google show nearly nothing about it. (except a page which was if not mistaken german.)