PHP - Files

1. Read from file
2. Fail to open file
3. Checking if open file succeded
4. Checking if open file succeded - suppress warnigs
5. Read CSV file
6. Open file to read or write
7. Write to a file
8. Fail to write to a file
9. Registration form - save to fill
10. copy - Copy a file
11. unlink - Delete a file
12. chmod
13. chown - Change owner
14. Get current working directory - getcwd
15. Show source