Backend Tech
PHP
Favorite PHP Snippets
String Truncation - iTrunc()
pgsql vs. mysqli vs. PDO vs. Zend_DB in PHP
PHP Best Practices
Using SOAP & REST Web Services in PHP
SQL
SQL Notes, Tips & Tricks
Building an API: Best Practices
CodeIgniter Basics
Design Pattern Quick Reference
Going UTF-8 (utf8) with PHP & MySQL