Learn PHP

PHP is the language that TYPO3 is written in and is essential for any programming or adding to TYPO3. You can find many resources to learn PHP. If you have no knowledge of PHP, we would recommend getting a book and/or going through the beginners and learning tutorials listed below. If  you are familiar with ASP or Java, learning PHP is not as difficult for the basics -- mostly just getting used to the new syntax and functions. The learning and reference resources will be very helpful to assist you in starting or furthering your learning of PHP.

REFERENCE

Documentation: www.php.net/docs.php
    You can get online, printer-friendly, single HTML, and other formats. We recommend to go to http://www.php.net and enter in a function in the search box and easily find the parameters and usage guidelines.

PHP Cheat Sheet: www.ilovejackdaniels.com/php/php-cheat-sheet/
    Very good reference guide that covers all the basics.

LEARNING

Complete Guide to PHP Class: www.w3schools.com/php/default.asp
    Goes through all major function areas. Can choose what you want a tutorial on.

Great WIKI/Book about PHP: hudzilla.org/phpwiki/

Learning PHP Tutorial www.tizag.com/phpT/
    Very detailed look at learning PHP basics.

Absolute Beginners Guide to PHP: www.zend.com/php/beginners/
    Excellent introduction to basics of PHP.

Processing Forms with PHP: php.about.com/od/learnphp/ss/php_forms.htm
    Example of how to handle forms.

EXAMPLE SCRIPTS

Listed below are a few websites that have all kinds of scripts. You can learn from these and often just take and use these scripts as a basis for your coding. For adding them to extensions though, you need to follow the Typo3 guidelines and the more complicated the script is, the more likely the number of changes will need to be done.

HotScripts: PHP Hotscripts www.hotscripts.com/PHP/
    10,000+ programs and scripts, lots of documentation and resources

PHP Resource Index: php.resourceindex.com
    4000+ programs and scripts, lots of documentation and help, and links to PHP community.

PHP Freaks: www.phpfreaks.com
    Lots of scripts plus helpful articles & reference. Also, a forum to ask questions.