The DevTheWeb.net blog is back again with the second installment of "Things You Probably Didn't Know About PHP" - some lesser known facts about the popular web language (part one is here).

Some of the things on his list this time include:

• Using the type matching equality operators (like "===" versus just "==")
• Returning multiple values by reference
• Chaining method calls
• Returning the value of print_r as a string
• Using the mysqli functions instead of just mysql