PHP Technology & Digital Applications 4

Question 1

Which PHP magic method is called when an inaccessible property is read?

Accepted Answer

__get()

Answer

__get() is triggered when reading data from inaccessible or non-existent properties of an object.

Question 2

What HTTP status code should a PHP script return when a resource is not found?

Accepted Answer

404

Answer

HTTP 404 (Not Found) indicates the server could not find the requested resource.

Question 3

Which PHP function permanently redirects a browser to a new URL?

Accepted Answer

header('Location: url')

Answer

header('Location: url') sends a redirect header; adding HTTP/1.1 301 makes it permanent.

Question 4

In PHP, what is the difference between `include` and `require`?

Accepted Answer

require causes a fatal error on failure; include only emits a warning

Answer

require causes a fatal E_COMPILE_ERROR if the file is not found, while include only produces an E_WARNING and continues execution.

Question 5

Which PHP function hashes a password using a strong one-way algorithm?

Accepted Answer

password_hash()

Answer

password_hash() uses bcrypt by default and is the recommended way to securely hash passwords in PHP.

PHP - PHP Programming Language Practice Test