[PHP] Representing HTTP/2 Frames with Associative Arrays

Previously, I expressed byte sequences using line breaks and string concatenation operators, but it seems more readable when using an associative array.

<?php

$settings = implode([
    "length" => "\x00\x00\x00",
    "type" => "\x04",
    "flag" => "\x00",
    "streamId" => "\x00\x00\x00\x00",
    "payload" => ""
]);

var_dump(bin2hex($settings));

The representation of the byte sequence using line breaks is as follows.

<?php

$settings = "\x00\x00\x00".
            "\x04".
            "\x00".
            "\x00\x00\x00\x00";

var_dump(bin2hex($settings));