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parameter_mystery7

Language/Type: PHP parameter mystery parameters return

The following console program uses parameters and produces four lines of output. What are they? 

function mystery($b, $c, $a) {
    $c++;
    print("$c $a $b\n");
    return $a + 2;
}

$a = 10;
$b = 4;
$c = $a + $b;

$d = mystery($a, $b, $c);
$b--;
$c = mystery($c, $d, $a);
mystery($a, $c, $b);
print("$a $b $c $d\n");
line 1
line 2
line 3
line 4

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