PHP code example of rasuvaeff / yii3-feature-flags

1. Go to this page and download the library: Download rasuvaeff/yii3-feature-flags library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

rasuvaeff / yii3-feature-flags example snippets


use Rasuvaeff\Yii3FeatureFlags\FeatureFlags;
use Rasuvaeff\Yii3FeatureFlags\FlagContext;

if ($featureFlags->isEnabled(
    flag: 'new-checkout',
    context: FlagContext::forUser(userId: $userId),
)) {
    // New checkout flow.
}


return [
    'rasuvaeff/yii3-feature-flags' => [
        'flags' => [
            'new-checkout' => [
                'enabled' => true,
                'salt' => 'new-checkout-v1',
                'rollout' => 25,
                'killSwitch' => false,
                'environments' => ['production'],
            ],
        ],
    ],
];


// By user ID
$context = FlagContext::forUser(userId: 'user-42');

// By tenant ID
$context = FlagContext::forTenant(tenantId: 'tenant-1');

// By environment
$context = FlagContext::forEnvironment(environment: 'production');

// Combined
$context = FlagContext::forUser(userId: 'user-42')
    ->withEnvironment(environment: 'production');


$context = FlagContext::forUser(userId: 'user-42')
    ->withForcedFlag(flag: 'new-checkout', enabled: true);

$featureFlags->isEnabled(flag: 'new-checkout', context: $context);


$featureFlags = new FeatureFlags(
    provider: $provider,
    strictMode: true,
);


$result = $featureFlags->evaluate(
    flag: 'new-checkout',
    context: FlagContext::forUser(userId: $userId),
);

$result->isEnabled();      // bool
$result->getReason();      // EvaluationReason enum
$result->getFlagName();    // string


use Rasuvaeff\Yii3FeatureFlags\Flag;
use Rasuvaeff\Yii3FeatureFlags\WritableFlagProvider;

/** @var WritableFlagProvider $provider */
$provider->save(flag: new Flag(name: 'new-checkout', rollout: 25));
$provider->remove(name: 'old-checkout');


use Rasuvaeff\Yii3FeatureFlags\FeatureFlags;
use Rasuvaeff\Yii3FeatureFlags\MetricsRecorder;

$recorder = new class implements MetricsRecorder {
    #[\Override]
    public function recordEvaluation(\Rasuvaeff\Yii3FeatureFlags\EvaluationResult $result): void
    {
        // ship $result->getReason()->value to your metrics backend
    }
};

$featureFlags = new FeatureFlags(provider: $provider, recorder: $recorder);


use Rasuvaeff\Yii3FeatureFlags\ConfigFlagProvider;
use Rasuvaeff\Yii3FeatureFlags\FlagProvider;

/** @var array $params */

return [
    FlagProvider::class => [
        'class' => ConfigFlagProvider::class,
        '__construct()' => [
            'flags' => $params['rasuvaeff/yii3-feature-flags']['flags'],
        ],
    ],
];