PHP error types and levels - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to display all errors except notices.

PHP

<?php
error_reporting([1]);
?>

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

AE_WARNING

BE_ERROR

CE_NOTICE

DE_ALL & ~E_NOTICE

Attempts:

3 left

💡 Hint

Common Mistakes

Using only E_ALL reports notices too.

Using E_NOTICE alone reports only notices.

The error_reporting function sets which errors are reported. Using E_ALL & ~E_NOTICE reports all errors except notices.

2fill in blank

medium

Complete the code to trigger a user error with a custom message.

PHP

<?php
trigger_error([1], E_USER_ERROR);
?>

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

A"Warning: Something went wrong"

B"Custom error occurred"

CE_USER_WARNING

DE_ERROR

Attempts:

3 left

💡 Hint

Common Mistakes

Passing error level constants instead of a message string.

Omitting quotes around the message.

The trigger_error function sends a user-generated error message. The first argument is the message string.

3fill in blank

hard

Fix the error in the code to set error reporting to show only warnings.

PHP

<?php
error_reporting([1]);
?>

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

AE_WARNING

BE_NOTICE

CE_ALL

DE_ERROR

Attempts:

3 left

💡 Hint

Common Mistakes

Using E_ALL reports all errors, not just warnings.

Using E_NOTICE reports notices, not warnings.

To report only warnings, use E_WARNING as the argument to error_reporting.

4fill in blank

hard

Fill both blanks to set error reporting to show all errors except deprecated and strict notices.

PHP

<?php
error_reporting(E_ALL & ~[1] & ~[2]);
?>

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

AE_DEPRECATED

BE_STRICT

CE_NOTICE

DE_WARNING

Attempts:

3 left

💡 Hint

Common Mistakes

Excluding E_NOTICE instead of E_DEPRECATED or E_STRICT.

Using bitwise OR instead of AND.

Using bitwise AND with the negation of E_DEPRECATED and E_STRICT excludes these error types from reporting.

5fill in blank

hard

Fill all three blanks to create a custom error handler function that handles warnings and notices.

PHP

<?php
function customErrorHandler([1], $errstr, $errfile, $errline) {
    if ($errNo & ([2] | [3])) {
        echo "Custom error: $errstr in $errfile on line $errline";
    }
}
set_error_handler('customErrorHandler');
?>

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

A$errNo

BE_WARNING

CE_NOTICE

D$errNo &

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect variable names for the error number.

Using bitwise AND incorrectly in the condition.

The error handler function receives the error number as the first argument. The condition checks if the error is a warning or notice using bitwise OR.