PHP


  1. About - History
  2. HTTP: A few words about how the web works
  3. Hello world
  4. Hello world, no HTML
  5. HTML inside PHP
  6. phpinfo
  7. Comments
  8. Errors
  9. print vs echo
  10. Numbers
  11. Numerical Operations
  12. Strings - concatenation
  13. Variables
  14. Variable interpolation (or variable expansion)
  15. String functions
  16. addslashes
  17. stripslashes
  18. trim - remove white spaces from both ends of a string