Conclusion
•
Still running PHP < 5.3? Upgrade!
•
Test your code on PHP 5.4 and upgrade soon
•
Contribute!
http://talks.php.net/show/phpuk2012
http://php.net/migration53
http://php.net/migration54
http://wiki.php.net
http://bugs.php.net
http://pecl.php.net/package/svm
http://pecl.php.net/package/libevent
http://php.zero.mq
http://nodephp.org
http://pecl.php.net/package/xhprof
http://xdebug.org/docs/profiler
https://github.com/facebook/hiphop-php