function EnvironmentResolver::hasVariable

Overrides ResolverInterface::hasVariable

File

vendor/open-telemetry/sdk/Common/Configuration/Resolver/EnvironmentResolver.php, line 14

Class

EnvironmentResolver

@internal

Namespace

OpenTelemetry\SDK\Common\Configuration\Resolver

Code

public function hasVariable(string $variableName) : bool {
    if (!Configuration::isEmpty($_SERVER[$variableName] ?? null)) {
        return true;
    }
    $env = getenv($variableName);
    if ($env === false) {
        return false;
    }
    return !Configuration::isEmpty($env);
}