Is the die() or exit() function needed in the end of a php script?

Question

In a php script I have some test and after the script the html page.

When a test fail i call die("Test 1 failed"); If no test fail the php script reach the end ?> and then load the html code after the php script.

Is this a good procedure? Or I need to write die() or exit() before the end of php script?

Answer 1

No you don't have to write that and this is not best practice. If the script reaches the end without fatal errros it will exit.

If this means "testing" for you, you're wrong. Testing should be done using unit tests. For php there is phpunit. Give it a try, that's the proper way of testing your code.

Edit: As CompuChip says in a comment, the only useful use case for exit is when you're writing a php based shell script that should return an error code. See the parameter section of the documentation for the exit() function.