Question

Please could someone confirm how many parameters are being sent to error_reporting() in the code: error_reporting(E_ALL | E_STRICT);

My assumption is that there is only one parameter which is the result of a bit wise OR of the two constants in the brackets.

I’d just like to be sure that this is not an alternative way to send multiple parameters to a function (i.e. alternative to using ,). Or it’s not doing something funky like sending a array containing both constants as a single parameter?

Answer 1

You’re correct in your first assumption; it’s a bitwise OR between E_ALL and E_STRICT. When I run the following code:

echo 'E_ALL: ' . decbin(E_ALL) . '<br>';
echo 'E_STRICT: ' . decbin(E_STRICT) . '<br>';

I get this:

E_ALL: 111011111111111
E_STRICT: 100000000000

Which results in

111111111111111

When bitwise ORed.