how to pass empty string as a parameter value

[eluser]Jelmer[/eluser]
I've solved it in the past by putting a dash or a zero there and then translate it in the function:

Code:

function mail( $a, $b, $c )
{
    foreach( array( 'a', 'b', 'c' ) as $var )
    {
        if ( $$var == '-' )
            $$var = '';
    }
    // rest of the function
}

So using a marker (in this case '-') to represent an empty string and replacing it in the function with an actual empty string.

URI example: http://www.mysite.com/mail/-/some/thing
Results in:

Code:

$a = '';
$b = 'some';
$c = 'thing';