René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Idea: New v3 opt-in serialization format to save space","articleBody":"- Use version \\x00\\x00\\x00\\x03 when this is stable\r\n- Avoid wasting space emitting key representations when `array_is_list`, i.e. when array keys are consecutive integers starting from 0 (have a fallback to start emitting unexpected keys with different values, if needed)\r\n- Allow more than one reference group to the same php value to be distinctly unserialized (e.g. `$x = new stdClass; $y = $x; igbinary_serialize([\u0026$x, \u0026$x, \u0026$y, \u0026$y]);`)\r\n  (TODO: I forget the exact issue. Was that fixed already for the general case, or was the issue mixes of references and non-references)\r\n- Shorter representations for 1-character interned strings\r\n- Shorter representations for private properties of serialized class `\\x00$classname\\x00$propname` (and protected properties `\\x00*\\x00$propname`) (keys for parent classes and traits would be serialized normally)\r\n- Don't bother creating string ids for empty strings (EDIT: that's already part of the v2 design?) and 1-character strings that would already be interned in modern php versions (support reusing per-request in RINIT in igbinary itself if practical for php versions without ZSTR_CHAR guaranteed to exist)\r\n\r\nOpt-in can be done on per-serializer settings, to allow any migrations (e.g. redis, memcached) to be done separately.\r\n\r\nThe unserializer should recognize v3 from the header\r\n\r\n\r\n\r\nRelated to https://github.com/phpredis/phpredis/issues/2194\r\n\r\nUpdates (October 19):\r\n\r\nImplementation is broken/incomplete and the v3 serialization format will be changed, found on the fork branch `igbinary-v3-format`\r\n\r\n- Shorter representations for very small non-negative integers (e.g. 0..7 can be X+(0..7)) is an idea I've seen in several other binary protocol formats, useful for `['key' =\u003e 1, 'x' =\u003e 0]` where integers are used instead of booleans, or just from most integers being small (e.g. counts) when averaged out over common use cases\r\n- Still haven't implemented for serializing lists\r\n- Still haven't finished adding a way to represent creating a new reference group to the same php object for the general case\r\n- Haven't benchmarked this yet\r\n","author":{"url":"https://github.com/TysonAndre","@type":"Person","name":"TysonAndre"},"datePublished":"2022-10-18T05:25:06.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/366/igbinary/issues/366"}