[UPHPU] pass variables into a function

[Wade Preston Shearer]

Consider the following code:

function do_something_awesome($a = 'a', $b = 'b') {}


I have set defaults for the variables that the function accepts. I can  
override the defaults, like this:

do_something_awesome('c', 'd');


…or…

$a = 'c';
$b = 'd';
do_something_awesome($a, $b);


And, I can passing in the first while letting the second use the  
default, like this:

do_something_awesome('c');


But what if I only want to pass in the second variable? Is that  
possible?
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