If the function is successful, you send the user to the main page. If it fails, you stop execution of the script and display an error, letting the user know that something went wrong.
Which datatypes are treaded as arrays
Under what circumstance is it impossible to assign a default value to a parameter while declaring a function?
What is the difference between print() and echo()?
There are three different kind of arrays:
What functions count elements in an array?