Swoolo 4.4
Backward incompatible changes
Consistent with PHP official, no longer supports PHP7.0 (@matyhtf)
Remove the Serialize module, which is maintained in a separate ext-serialize extension. Reason: Due to frequent changes to the PHP kernel, stability cannot be guaranteed
Remove the PostgreSQL module and maintain it in a separate ext-postgresql extension. Reason: PostgreSQL uses asynchronous ways in the kernel and lacks the necessary unit tests to guarantee quality
Runtime::enableCoroutine is no longer automatically compatible with the internal and external environment of the Coroutine. Once enabled, all blocking operations must be called in the Coroutine (@matyhtf)
Due to the introduction of the new Coroutine\MySQL client driver, the underlying design is more standardized, but there are some small downward incompatible changes
Coroutine\MySQL->fetch/nextResult is optimized for on-demand reads, which will trigger IO scheduling
When the defer attribute is on, the request of statement needs to use statement->recv to receive the response
When the defer/fetch_mode feature is enabled, if there is unreceived data, a new request will be banned
Unlike asynchronous, the connected attribute is no longer updated based on events in real-time (It's not reliable) but is updated after the IO operation fails
Coroutine\Http\Client->set_cookie_headers no longer have key names (#2664) (@twose)
移除 Serialize 模块，单独在 ext-serialize 扩展中维护
移除 PostgreSQL 模块，单独在 ext-postgresql 扩展中维护
说明：最低PHP版本要求 php 7.1
Swoolo 4.3
Websocket\Server->exists only shows if the connection exists. Please use the isEstablished method to get if it is a Websocket client.
Remove the swoole.fast_serialize configuration item
Removed the PHP Warning when the Co\Client method return failed
Remove the Server->gzip method
Remove PicoHttpParser support
Remove async modules
Remove all async modules, separate asynchronous extensions to async-ext:
Async functions
MySQL
Redis
Http\Client
Memory\Pool
MsgQueue
RingQueue
移除 PicoHttpParser 支持
移除所有异步模块，单独在扩展中维护
注意：从4.3版本开始，很多原来内置的函数或是类都不能用了，需要单独安装对应的扩展。
Swoole 2.0.12
最小 PHP 版本要求为 php 7.0
Swoole 2.0.5
最小 PHP 版本要求为 php 5.5
详细的版本更新记录可以这里查看。