Object-Oriented Programming Quiz

What is the primary purpose of exceptions in PHP?

• To improve performance

• To handle errors and exceptional conditions

• To create faster loops

• To replace variables

Which PHP keyword is used to define a block of code where exceptions may occur?

• throw

• catch

• try

• finally

Which keyword is used to raise an exception in PHP?

• raise

• throw

• error

• catch

In the given example, what is the name of the custom exception class?

• MyException

• CustomException

• UserException

• DivisionException

What block of code is executed regardless of whether an exception is thrown or not?

• try

• throw

• catch

• finally

Given the function: function divide($a, $b) { if ($b === 0) { throw new Exception("Division by zero."); } return $a / $b; } What happens when divide(4, 0) is called?

• Returns 0

• Throws an Exception

• Prints "Division by zero."

• Ignores the error

If an exception is thrown but no catch block is defined, what will happen?

• The program ignores the exception

• The program continues as normal

• The program terminates with a fatal error

• The program retries the block

Consider the code: try { echo divide(10, 2); } catch (CustomException $e) { echo "Error: " . $e->getMessage(); } What will be the output?

• Error: Division by zero

• 5

• Nothing

• Execution complete

Why might a developer create a CustomException class instead of using the built-in Exception class?

• To add unique behavior for specific error types

• To make code run faster

• To avoid using try-catch blocks

• To simplify syntax

What is the output of this code? try { echo divide(10, 0); } catch (CustomException $e) { echo "Error: " . $e->getMessage(); } finally { echo " Execution complete."; }

• Error: Division by zero. Execution complete.

• Execution complete.

• 0 Execution complete.

• Program crashes