PHP variable type of class property

Question

Lets take this code as an example:

class foo
{
    private $segments = NULL;
}

$segments will be an array later.

The question:

Should i tell PHP that $segments is an array ( private $segments = array(); ) or leave it as NULL?

What is better?

Thank you!

Answer 1

if you are sure it will be an array later, declare it as an array, if it may change during the program, just keep it as it is.

PHP is non-typed language, so it doesn't really matter, it just a matter of standards and habits.