===description===
reusedKeyVar
===file===
<?php
                    $key = "a";
                    echo $key;

                    $arr = ["foo" => "foo.foo"];

                    foreach ($arr as $key => $v) {
                        list($key) = explode(".", $v);
                        echo $key;
                    }
===expect===
UnusedVariable
===ignore===
TODO
