UnusedLocalVariable doesn't detect unused var when defined twice

[bkdotcom]

function testUnused()
{
    $worthlessVar = false;
    $worthlessVar = true;
}

phpmd fails to raise any UnusedLocalVariable notice re $worthlessVar

[kylekatarnls]

The following:

function testUnused()
{
    $worthlessVar = false;
}

did trigger the UnusedLocalVariable so it's actually the second assignation which is seen as a usage.

[bkdotcom]

Excellent!