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Example code of phpway/pubsubwp

Informations about the package pubsubwp

Pubsub with priority

Build Status

I hear you - why another pubsub library when there is already a plethora of them? I was looking for a simple PHP publish-subscribe implementation with following properties:

This simple pubsub library tries to fill in this gap.

Example of usage

Create pubsub instance:

Subscribe few callbacks to some topic:

You can also subscribe callback with priority. When topic is published, callbacks are sorted by this priority before they are called (higher priority callbacks will be executed first). Default priority is 0.

When topic is published via PubSub::publish() method, the pubsub will create an event object (inherited from ArrayObject) and it will start passing it through all subscribed callbacks sorted by priorities:

Event's initial data can be specified in the second optional parameter. Each subscribed callback will receive this event object in the (only) parameter.

Callback writing 'A' on tape was executed first since it has higher priority than others.

Callback can also decide to skip all other callbacks in the queue that have not been executed yet. This is done simply via calling Event::stop() method:

This will cause skipping all callbacks with priority lower than 5:

You can also specify your own event that will be passed through the subscribed callbacks. The only requirement is that it must inherit from PubSubWP\Event which is the class of the default event:

All versions of pubsubwp with dependencies

PHP Build Version
Package Version
Requires php Version ^5.6 || ^7.0
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