43 Further Reading, Part 4

W3Schools is a decent reference for PHP and SQL, though it does not do as thorough of a job as it does with HTML, CSS, and JavaScript. Here are some starting points of interest to this section:

• PHP Tutorials
• MySQL and SQL
• PDO for MySQL (ignore the mysqli sections)

The Official PHP Site has definitive reference information on PHP:

• The PHP Language Reference

The phptherightway.com site has lots of good stuff including a “language highlights” section and a section on security best practices:

• PHP Language Highlights
• PHP Security Advice

Geeks for Geeks has a nice cheat sheet on SQL, with everything we did plus lots more.

• SQL Cheat Sheet

For a history of PHP, SQL, and MySQL, try Wikipedia:

• PHP
• SQL
• MySQL