PHP7 安装event扩展的实现方法
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Libevent 是一个用C语言编写的、轻量级的开源高性能I/O框架,支持多种 I/O 多路复用技术: epoll、 poll、 dev/poll、 select 和 kqueue 等;支持 I/O,定时器和信号等事件;注册事件优先级。PHP提供了对应的扩展 libevent、 Event 。
相比 libevent ext, event ext 拥有更好的性能表现和更全面的API,可以让我们更友好的使用 Libevent。
安装 Libevent 库
php event 扩展 依赖 Libevent 库,需要先编译安装(注意是 Libevent 库,非 libevent 扩展)。
- git clone --depth=1 https://github.com/nmathewson/Libevent.git
- cd Libevent
- ./autogen.sh
- ./configure --prefix=/usr/local/libevent
- make && make install
安装 Event 扩展
可以直接使用 pecl 安装
- pecl install event
- downloading event-2.5.3.tgz ...
- Starting to download event-2.5.3.tgz (140,913 bytes)
- ..............................done: 140,913 bytes
- 50 source files, building
- running: phpize
- Configuring for:
- PHP Api Version: 20180731
- Zend Module Api No: 20180731
- Zend Extension Api No: 320180731
- Enable internal debugging in Event [no] :
- Enable sockets support in Event [yes] :
- libevent installation prefix [/usr] : /usr/local/libevent
- ...
- Build process completed successfully
- Installing '/usr/local/php/lib/php/extensions/no-debug-non-zts-20180731/event.so'
- install ok: channel://pecl.php.net/event-2.5.3
- Extension event enabled in php.ini
查看安装结果
- [root@localhost ~]# php --ri event
- event
- Event support => enabled
- Sockets support => enabled
- Debug support => disabled
- Extra functionality support including HTTP, DNS, and RPC => enabled
- OpenSSL support => enabled
- Thread safety support => disabled
- Extension version => 2.5.3
- libevent2 headers version => 2.2.0-alpha-dev