===description===
assertIfFalseNoAnnotation
===file===
<?php
                    function isInvalidString(?string $myVar) : bool {
                        return $myVar === null || $myVar[0] !== "a";
                    }

                    $myString = rand(0, 1) ? "abacus" : null;

                    if (isInvalidString($myString)) {
                        // do something
                    } else {
                        echo "Ma chaine " . $myString;
                    }
===expect===
PossiblyNullOperand
===ignore===
TODO
