Since we have migrated to PHP 5, I think it is good to know some of the new features that we can use for the development of future php applications.
http://www.onlamp.com/pub/a/php/2004/07/15/UpgradePHP5.html
http://www.devshed.com/c/a/PHP/Whats-New-in-PHP-5/
phpDocumentor, sometimes referred to as phpdoc or phpdocu, is the current standard auto-documentation tool for the php language. Similar to Javadoc, and written in php, phpDocumentor can be used from the command line or a web interface to create professional documentation from php source code. phpDocumentor has support for linking between documentation, incorporating user level documents like tutorials and creation of highlighted source code with cross referencing to php general documentation.
Check out the list of common PHP best practices in the link below and the attachment file.
http://www.mt-soft.com.ar/2007/12/21/php-best-practices-solutions/
PHP development best practices
Feel free to add if you know of any other good php practices.
