Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Format a GMT/UTC date/time
<?php gmdate(string $format, ?int $timestamp = null): string
<?php             $signed_headers_string = "host";

        }



        $date_text = gmdate('Ymd', time());

        $time_text = $date_text . 'T000000Z';

        $algorithm = 'AWS4-HMAC-SHA256';

        $scope = $date_text . "/" . $AWSRegion . "/s3/aws4_request";
<?php             $signed_headers_string = "host";

        }



        $date_text = gmdate('Ymd', time());

        $time_text = $date_text . 'T000000Z';

        $algorithm = 'AWS4-HMAC-SHA256';

        $scope = $date_text . "/" . $AWSRegion . "/s3/aws4_request";
<?php             $signed_headers_string = "host";

        }



        $date_text = gmdate('Ymd', time());

        $time_text = $date_text . 'T000000Z';

        $algorithm = 'AWS4-HMAC-SHA256';

        $scope = $date_text . "/" . $AWSRegion . "/s3/aws4_request";