===description===
possiblyInvalidArrayAccessWithNestedArray
===file===
<?php
                    /**
                     * @return array<int,array<string,float>>|string
                     */
                    function return_array() {
                        return rand() % 5 > 3 ? [["key" => 3.5]] : "key:3.5";
                    }
                    $result = return_array();
                    $v = $result[0]["key"];
===expect===
PossiblyInvalidArrayOffset
===ignore===
TODO
