Web development (Several answers may be correct)

Where do the contents of echo, print, var_dump end up?

In the context running the script

In the server log files

In the web browser, if run through a web browser

What does "break" do?

It terminates a loop, preventing anything that follows in the current iteration to execute

It breaks out of a closure, preventing anything that follows in the same scope to execute

It may return a value

It halts execution of the current script

What does "exit" do?

It terminates a loop, preventing anything that follows in the current iteration to execute

It breaks out of a closure, preventing anything that follows in the same scope to execute

It may return a value

It halts execution of the current script

What does "return" do?

It terminates a loop, preventing anything that follows in the current iteration to execute

It breaks out of a closure, preventing anything that follows in the same scope to execute

It may return a value

It halts execution of the current script

In which ways can an email sent, entered through a web form?

The web form itself may send the email

The web form itself may use a local email client on the visitor's computer to send the email

The web form may send a request to a server script with the form data, which then sends the email

The web form may send a request to a server script with the form data, which then uses mail software to send the email

How are php scripts processed when called from a browser?

The web server does not handle requests with .php in it. PHP does, and then executes them

The web server handles requests with .php in it, which is then passed to the PHP intepreter, which then executes it

What can restrict the access, executed by a PHP script, on a file system level?

Browser javascripts

File system permissions

Web server configuration

The code within the scripts

What is a "PHP extension"?

PHP code that you can reuse for other purposes

A tool to improve PHP's performance

Additional libraries of PHP

Opcache is a way to compile your PHP scripts, so each request can be executed faster. Where is it activated and configured?

It's configurable in your PHP scripts

It's configurable in your server configuration

It's possible to activate and deactivate this in your PHP scripts

It's possible to activate and deactivate this in your server configuration

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