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Example code of tianhe1986/fatevent

Informations about the package fatevent

Fatevent

Fatevent是一个轻量级的PHP事件库，使用非常容易。

安装

首先确保PHP版本在7.0以上。

推荐通过Composer进行安装

Composer的安装请参考官方配置。

安装好Composer后，在你的项目中创建一个 composer.json 文件：

然后在项目文件夹下执行:

之后添加autoloader:

使用

事件的处理示例如下，首先，需要监听某个事件，附加处理函数：

以上代码监听了test.test事件。接下来，在需要的地方触发对应的事件：

此时，之前附加的处理函数便会执行。在接下来的几个小节中，会详细的介绍使用的场景及函数。

增加监听

$name为事件名。

$handler为处理函数，函数定义如下：

$eventData为触发事件时附带的数据，$defaultData为监听时附带的数据。

$data为监听时附带的数据。

一个事件可以被多次监听，触发时多个处理函数会按监听的顺序依次调用。示例如下：

以上代码执行将输出

增加一次性监听

参数与on一样，只是此处理函数在一次之后会被移除，下次再触发同一事件时不会再被调用。示例如下：

以上代码将输出

事件停止处理

有时候，你希望停止事件被继续处理，你可以通过从处理函数中返回 false 来实现。如下所示：

以上代码将输出

注意，如果某个一次性处理函数还未被调用，事件就已经停止了，则此处理函数不会被移除。只有被调用过的一次性处理函数才会被移除。

取消监听

可以取消某个处理函数，使用示例如下：

注意，匿名函数无法被取消，如果需要取消，请使用某个变量储存它。

如果$handler为 null，则该事件上所有的处理函数都会被取消。

触发事件

会触发某项事件，其中$data为触发事件时附加的数据：

以上代码将输出

All versions of fatevent with dependencies

PHP Build Version
Package Version
Requires php Version >=7.0
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