Question about php5

[rocket]

I just got back from basic training for the guard and while I was gone php5 came out and I was wonding what is new about it and is there any thing that I have to worry about when coding in it compared to php4. Any ones advice would be welcome.

Thanks
Tim

[goldbug]

Here's an excellent place to start:

http://www.php.net/manual/en/migration5.php
http://www.php.net/manual/en/faq.migration5.php

In a nutshell: 99% of old code will probably still work; most webhosts will be slow to adopt, so old-code-compatibility will be a moot point for a while.

Also:
http://www.php.net/zend-engine-2.php
http://www.sitepoint.com/article/coming-soon-webserver-near