Iffectation
An iffectation is both an assignation and a condition at the same time.
Whether an assignation should be used as a condition is debated. It makes the code less readable, as the assignation is hidden in the if condition.
It also saves some extra lines of code, when the condition applies to something that will immediately be used.
<?php
if ($trunk = trumpet()) { }
// same, without the iffectation
$trunk = trumpet();
if ($trunk) { }
?>