How do I implement blue/green deployments for Self-service portals?

    // Example of blue/green deployment using PHP
    class Deployment {
        private $blueEnvironment;
        private $greenEnvironment;
        private $currentEnvironment;

        public function __construct() {
            // Initialize environments
            $this->blueEnvironment = $this->createEnvironment("blue");
            $this->greenEnvironment = $this->createEnvironment("green");
            $this->currentEnvironment = "blue"; // Start with blue
        }

        private function createEnvironment($color) {
            // Assuming we're setting up a new environment instance here
            return [
                "color" => $color,
                "status" => "ready"
            ];
        }

        public function switchEnvironment() {
            // Switch from blue to green or vice versa
            $this->currentEnvironment = ($this->currentEnvironment === "blue") ? "green" : "blue";
            echo "Switched to " . $this->currentEnvironment . " environment.\n";
        }

        public function deployNewVersion($newVersion) {
            if ($this->currentEnvironment === "blue") {
                $this->greenEnvironment['version'] = $newVersion;
                echo "Deployed version " . $newVersion . " to green environment.\n";
            } else {
                $this->blueEnvironment['version'] = $newVersion;
                echo "Deployed version " . $newVersion . " to blue environment.\n";
            }
        }
    }

    $deployment = new Deployment();
    $deployment->deployNewVersion("1.0.1");
    $deployment->switchEnvironment();