Any way to specify optional parameter values in PHP?

Question

Let\'s say I\'ve got a PHP function foo:

function foo($firstName = \'john\', $lastName = \'doe\') {
    echo $firstName . \" \" . $lastName;
}
// foo(); --&g         


        

Answer 1

You could refactor your code slightly:

function foo($firstName = NULL, $lastName = NULL)
{
    if (is_null($firstName))
    {
        $firstName = 'john';
    }
    if (is_null($lastName ))
    {
        $lastName = 'doe';
    }

    echo $firstName . " " . $lastName;
}

foo(); // john doe
foo('bill'); // bill doe
foo(NULL,'smith'); // john smith
foo('bill','smith'); // bill smith