如何解决使用PHP代码在本地主机上打印Cardano API节点信息的问题？

Question

这是我的PHP代码，用于在本地主机上打印Cardano币节点信息：

<?php
class Cardano {
    private $host;
    private $port;
    private $disableSSLVerification;
    public $httpCode;

    // The option to not use an SSL certificate doesn't work anymore, so you need to tell curl where to find the certificate.
    const pem = '/home/softmac/Documents/cardano-sl/state-wallet-mainnet/tls/client/client.pem';

    public function getInfo() {
        $infos = json_encode($this->get('/api/v1/node-info') , true);
        print_r($infos);
    }

    private static function jsonDecode(string $content):
        array {

            $data = json_decode($content, true);
            if (!is_array($data)) throw new \Exception($content);
            else

            //print_r($data['data']); //----it will print array/value of any data
            return $data;
        }

        // CURL Get
        public function get(string $endPoint):
            string {
                $ch = curl_init();
                curl_setopt($ch, CURLOPT_AUTOREFERER, true);
                curl_setopt($ch, CURLOPT_HEADER, 0);
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
                curl_setopt($ch, CURLOPT_URL, $this->host . ':' . $this->port . $endPoint);
                curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
                curl_setopt($ch, CURLOPT_SSLCERT, Cardano::pem);
                //curl_setopt($ch, CURLOPT_SSLVERSION, 2);
                if ($this->disableSSLVerification) {
                    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
                    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
                }
                $data = curl_exec($ch);
                $this->httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
                if (curl_exec($ch) === false) {
                    throw new Exception('Curl error: ' . curl_error($ch));
                }
                curl_close($ch);
                return $data;
            }
            $client = new Cardano('https://127.0.0.1', 8090, true);
            print_r($client->getInfo());
?>

此代码使用php hello.php在命令行上成功运行。当我的系统上安装了apache2时，它不会在localhost（浏览器）上打印任何内容。