10) PHP switch statement.
use PHP switch statement to select one of many blocks of code to be executed.
11) PHP arrays.
The foreach loop is used to loop through arrays.
13) PHP function.
14) $_GET variable.
When using method="get" in HTML forms, all variable names and values are displayed in the URL.
This method should not be used when sending passwords or other sensitive information. Information sent from a form with the GET method is visible to everyone and has limits on the amount of information to send.
15) $_POST variable.
Information sent from a form with the POST method is invisible to others and has no limits on the amount of information to send.
thats all for today. see you in next topic ! :))