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Example code of jbzoo/event

Informations about the package event

JBZoo / Event

CI Coverage Status Psalm Coverage Psalm Level CodeFactor

Stable Version Total Downloads Dependents GitHub License

A lightweight PHP event manager library that provides a simple yet powerful pattern for event-driven development. Create objects that emit events and register listeners to handle them with support for priorities, namespaces, and wildcard matching.

Features

Installation

Usage

Quick Start

Priority-Based Execution

By supplying a priority, you are ensured that subscribers handle in a specific order. The default priority is EventManager::MID. Anything below that will be triggered earlier, anything higher later. If there are two subscribers with the same priority, they will execute in an undefined, but deterministic order.

Callback Types

All standard PHP callable types are supported:

Event Propagation Control

Passing Arguments

Event data can be passed to listeners as function arguments:

Because you cannot really do anything with the return value of a listener, you can pass arguments by reference to communicate between listeners and back to the emitter.

Namespace Wildcards

Use wildcards to listen to multiple related events:

One-Time Listeners

For events that should only be handled once:

Advanced Usage

Performance Benchmarks

Extensive performance testing with 100,000 iterations shows excellent performance characteristics. Benchmark tests use phpbench/phpbench - see detailed results in tests/phpbench.

Note: 1μs = 1/1,000,000 of a second - these are microseconds!

benchmark: ManyCallbacks

subject groups its revs mean stdev rstdev mem_real diff
benchOneUndefined undefined 10 100000 0.65μs 0.01μs 1.00% 6,291,456b 1.00x
benchOneWithStarBegin *.bar 10 100000 0.67μs 0.01μs 1.44% 6,291,456b 1.04x
benchOneWithAllStars *.* 10 100000 0.68μs 0.03μs 4.18% 6,291,456b 1.04x
benchOneWithStarEnd foo.* 10 100000 0.68μs 0.01μs 1.24% 6,291,456b 1.04x
benchOneNested foo.bar 10 100000 43.23μs 0.46μs 1.07% 6,291,456b 66.56x
benchOneSimple foo 10 100000 45.07μs 2.63μs 5.83% 6,291,456b 69.39x

benchmark: ManyCallbacksWithPriority

subject groups its revs mean stdev rstdev mem_real diff
benchOneUndefined undefined 10 100000 0.65μs 0.01μs 1.35% 6,291,456b 1.00x
benchOneNestedStarAll *.* 10 100000 0.67μs 0.01μs 1.34% 6,291,456b 1.03x
benchOneWithStarBegin *.bar 10 100000 0.67μs 0.01μs 1.10% 6,291,456b 1.04x
benchOneWithStarEnd foo.* 10 100000 0.68μs 0.01μs 1.13% 6,291,456b 1.05x
benchOneSimple foo 10 100000 4.54μs 0.02μs 0.35% 6,291,456b 7.03x
benchOneNested foo.bar 10 100000 4.58μs 0.04μs 0.81% 6,291,456b 7.10x

benchmark: OneCallback

subject groups its revs mean stdev rstdev mem_real diff
benchOneWithStarBegin *.bar 10 100000 0.69μs 0.03μs 4.00% 6,291,456b 1.00x
benchOneWithStarEnd foo.* 10 100000 0.70μs 0.03μs 4.22% 6,291,456b 1.00x
benchOneNestedStarAll *.* 10 100000 0.70μs 0.04μs 6.02% 6,291,456b 1.01x
benchOneUndefined undefined 10 100000 0.71μs 0.05μs 7.44% 6,291,456b 1.02x
benchOneSimple foo 10 100000 1.18μs 0.03μs 2.27% 6,291,456b 1.70x
benchOneNested foo.bar 10 100000 1.25μs 0.03μs 2.46% 6,291,456b 1.81x

benchmark: Random

subject groups its revs mean stdev rstdev mem_real diff
benchOneSimple random.*.triggers 10 100000 4.29μs 0.33μs 7.69% 6,291,456b 1.00x

Development

Setup

Testing

License

MIT

All versions of event with dependencies

PHP Build Version
Package Version
Requires php Version ^8.3
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