1. For learning more about PHP, we should codecademy.com or Lynda.com.
2. PHP is a widely used open source scripting language.
3. PHP commands are typically incorporated into pages that begin and end as HTML documents.
4. The value and power of PHP is that it can execute instructions based on specified conditions. For example: increase the value of a variable at a certain rate; print out statements of increasing value of variable until it reaches a specific value; then stop. That is an example of a "While" statement. There are also "If" statements. HTML cannot execute conditional instructions.