function MergeExtensionConfigurationParameterBag::getUnusedEnvPlaceholders

Overrides EnvPlaceholderParameterBag::getUnusedEnvPlaceholders

File

vendor/symfony/dependency-injection/Compiler/MergeExtensionConfigurationPass.php, line 149

Class

MergeExtensionConfigurationParameterBag

@internal

Namespace

Symfony\Component\DependencyInjection\Compiler

Code

public function getUnusedEnvPlaceholders() : array {
    return !isset($this->processedEnvPlaceholders) ? [] : array_diff_key(parent::getEnvPlaceholders(), $this->processedEnvPlaceholders);
}