Set_error_handler function in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set a custom error handler function named 'myErrorHandler'.

PHP

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

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

A"myErrorHandler"

BmyErrorHandler()

CerrorHandler

DhandleError

Attempts:

3 left

💡 Hint

Common Mistakes

Calling the function instead of passing its name.

Passing the function name without quotes.

The set_error_handler function expects the name of the error handler function as a string. So, you pass it as "myErrorHandler".

2fill in blank

medium

Complete the code to define a custom error handler function that accepts the error number and error message.

PHP

<?php
function myErrorHandler([1], $errstr) {
    echo "Error: $errstr";
}
?>

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

A$errorNumber

B$errno

C$errnum

D$error

Attempts:

3 left

💡 Hint

Common Mistakes

Using a parameter name that is not descriptive or standard.

Missing the first parameter entirely.

The first parameter of a custom error handler function is usually named $errno, which holds the error number.

3fill in blank

hard

Fix the error in the code to correctly set the custom error handler function.

PHP

<?php
set_error_handler(myErrorHandler);
?>

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

A'myErrorHandler'

BmyErrorHandler()

C"myErrorHandler"

DmyErrorHandler

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the function name without quotes.

Calling the function instead of passing its name.

The function name must be passed as a string with double quotes to set_error_handler. Without quotes, PHP treats it as a constant or function call, causing an error.

4fill in blank

hard

Fill both blanks to create a custom error handler that logs errors to a file named 'errors.log'.

PHP

<?php
function myErrorHandler([1], $errstr) {
    error_log($errstr, [2], "errors.log");
}
?>

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

A$errno

B3

C0

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong parameter names.

Using incorrect message type for error_log.

The first parameter is the error number $errno. The second argument to error_log is the message type; 3 means to append the error message to the specified file.

5fill in blank

hard

Fill all three blanks to set a custom error handler that ignores warnings (error level 2) and logs other errors to 'errors.log'.

PHP

<?php
function myErrorHandler([1], $errstr) {
    if ([2] == 2) {
        return true;
    }
    error_log($errstr, [3], "errors.log");
}
set_error_handler("myErrorHandler");
?>

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

A$errno

B$errnum

C3

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names for error number.

Checking wrong error level.

Using wrong message type in error_log.

The error number parameter is $errno. To ignore warnings, check if $errno == 2. Use 3 as the message type in error_log to log errors to a file.