Throwing exceptions in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to throw an exception with the message "Error occurred".

PHP

<?php
throw new [1]("Error occurred");
?>

Drag options to blanks, or click blank then click option'

AException

BError

CThrowable

DRuntimeException

Attempts:

3 left

💡 Hint

Common Mistakes

Using a class that does not exist or is not throwable.

Forgetting to use the 'new' keyword before the exception class.

The Exception class is the base class for all exceptions in PHP. Using throw new Exception("Error occurred") correctly throws an exception with the given message.

2fill in blank

medium

Complete the code to throw a RuntimeException with the message "Runtime error".

PHP

<?php
throw new [1]("Runtime error");
?>

Drag options to blanks, or click blank then click option'

AException

BErrorException

CRuntimeException

DLogicException

Attempts:

3 left

💡 Hint

Common Mistakes

Using a generic Exception instead of a specific RuntimeException.

Using an unrelated exception class.

RuntimeException is a built-in exception class used to represent runtime errors. Throwing it with throw new RuntimeException("Runtime error") is correct.

3fill in blank

hard

Fix the error in the code to correctly throw an exception with the message "Invalid input".

PHP

<?php
throw [1]("Invalid input");
?>

Drag options to blanks, or click blank then click option'

Anew Exception

BException

CError

Dnew Error

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the 'new' keyword before the exception class.

Using the exception class name without parentheses.

When throwing an exception, you must use the new keyword before the exception class name. So throw new Exception("Invalid input") is correct.

4fill in blank

hard

Fill both blanks to throw an exception with the message "File not found" using the ErrorException class.

PHP

<?php
throw new [1]("File not found", [2]);
?>

Drag options to blanks, or click blank then click option'

AErrorException

B404

C0

DException

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong exception class.

Using an invalid error code.

The ErrorException constructor accepts a message and an error code. Using 0 as the code is common when no specific code is needed.

5fill in blank

hard

Fill all three blanks to throw a LogicException with the message "Invalid operation", code 100, and previous exception stored in $prev.

PHP

<?php
throw new [1]("Invalid operation", [2], [3]);
?>

Drag options to blanks, or click blank then click option'

AException

B100

C$prev

DLogicException

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong exception class.

Mixing up the order of arguments.

Not passing the previous exception variable.

The LogicException constructor accepts a message, a code, and a previous exception. Passing "Invalid operation", 100, and $prev correctly creates the exception.