README

The simplify feature toggle library for PHP

Concept

Coming soon...

Usage

Just one file! Using the Toggle to do everything.

Feature Toggle

Use the fixed result:

<?php

$toggle = new Toggle();
$toggle->create('f1', true);

// Will return true
$toggle->isActive('f1');

Use callable to decide the return dynamically:

<?php

$toggle = new Toggle();
$toggle->create('f1', function() {
    return true;
});

// Will return true
$toggle->isActive('f1');

Use callable with Context:

<?php

$toggle = new Toggle();
$toggle->create('f1', function($context) {
    return $context['default'];
});

// Will return true
$toggle->isActive('f1', [
    'return' => true,
]);

Parameters

Feature instance can store some parameter. For example:

<?php

$toggle = new Toggle();

$toggle->create('f1', true, ['name' => 'Miles']);
$toggle->create('f2', false, ['name' => 'Chou']);

// Will return 'Chou'
$toggle->params('f1', 'name');

// Also using in callback
$toggle->create('f3', function($context, array $params) {
    return $params['key'] === $context['key'];
}, ['key' => 'foo']);

Export / Import result

When you want persistent the result to some storage, we can use the result() method.

<?php

$toggle = new Toggle();

$toggle->create('f1', true);
$toggle->create('f2', false);

$result = $toggle->result(); // array ['f1' => true, 'f2' => false]

Also, you can restore the result.

<?php

$toggle = new Toggle();

$toggle->create('f1', false);
$toggle->create('f2', true);
$toggle->result(['f1' => true, 'f2' => false]);

$toggle->isActive('f1'); // true
$toggle->isActive('f2'); // false

Control Structure

This snippet is like if / switch structure:

<?php

$toggle = new Toggle();
$toggle->create('f1');
$toggle->create('f2');
$toggle->create('f3');

$toggle
    ->when('f1', function ($context, $params) {
        // Something when f1 is on
    })
    ->when('f2', function ($context, $params) {
        // Something when f2 is on
    })
    ->when('f3', function ($context, $params) {
        // Something when f3 is on
    });