Essential PHP Security - Style Conventions

Style Conventions
Items appearing in the book are sometimes given a special appearance to set them apart from the regular text. Here's how they look:



Italic

Used for citations to books and articles, commands, email addresses, URIs, filenames, emphasized text, and first references to terms.



Constant width

Used for literals, constant values, code listings, and XML markup.



Constant width italic

Used for replaceable parameter and variable names.




Constant width bold

Used to highlight the portion of a code listing being discussed.

This icon signifies a tip, suggestion, or general note.






This icon indicates a warning or caution.