Re: [RFC] Add is_list(mixed $value): bool to check for list-like arrays

> For example, with > > $a = ['foo', 'bar', 'baz’]; > > is_list() will return true, but > if you run $a through asort(), > is_list() will return false > because the keys are no longer > consecutive integers, but is there any doubt this is still a list? > Maybe in a pure sense, it’s not, but I think this could be confusing. > tl;dr: Could add flags to is_array. In the library I mentioned, if given a 0-indexed, sequentially keyed array (list), I would sort or merge and pass the result to array_values()...return same type given of the three options (map, list, dict). But that might feel more like introducing a new type - rather than having a native way to check: is_indexed_array(array $array[, int $flags = PHP_MAP]) SEQUENTIAL SEQUENTIAL_DESC STARTS_AT_0 is_associative_array(array $array) or “array” could come first to create a triple set of is_array functions. Which brings me to thinking a flag could ge added to is_array. - no new functions to remember in the SL - should be able to do in a non-BC way, default argument value of PHP map - allows type safety fo array keyword while letting developers opt-into another layer: ex. using string with specifying string details function hello(string $arg) { if (str_starts_with($arg, “wor”)) { } else { trigger_error } } Cheers, Josh