PHP error types and levels - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Parse Error in PHP?

A Parse Error happens when PHP finds a syntax mistake in your code, like a missing semicolon or bracket. It stops the script from running.

beginner

What does a Fatal Error mean in PHP?

A Fatal Error occurs when PHP encounters a serious problem, like calling a function that doesn't exist. It stops the script immediately.

beginner

Explain a Warning in PHP.

A Warning is a non-fatal error. PHP shows a message but continues running the script. For example, including a missing file triggers a warning.

beginner

What is a Notice in PHP?

A Notice is a minor message about something that might be a problem, like using an undefined variable. It doesn't stop the script.

intermediate

Name some common PHP error levels.

Common PHP error levels include: E_ERROR (fatal errors), E_WARNING (warnings), E_PARSE (parse errors), E_NOTICE (notices), and E_DEPRECATED (deprecated features).

Which PHP error stops the script immediately due to a serious problem?

A Warning

B Fatal Error

C Notice

D Parse Error

Fatal Errors stop the script immediately when a serious problem occurs.

What type of PHP error is caused by a syntax mistake?

A Deprecated

B Warning

C Notice

D Parse Error

Parse Errors happen when PHP finds syntax mistakes in the code.

Which PHP error level shows a message but allows the script to continue?

A Fatal Error

B Parse Error

C Warning

D Error Exception

Warnings show messages but do not stop the script.

What does a PHP Notice usually indicate?

A A minor issue like an undefined variable

B A deprecated feature

C A syntax error

D A serious error stopping the script

Notices indicate minor issues such as using undefined variables.

Which error level warns about features that will be removed in the future?

A E_DEPRECATED

B E_NOTICE

C E_WARNING

D E_PARSE

E_DEPRECATED warns about features that are outdated and will be removed.

Describe the main PHP error types and how they affect script execution.

Think about which errors stop the script and which allow it to continue.

List and explain at least three PHP error levels and give an example of when each might occur.

Consider errors that stop the script, warnings, and minor notices.