Socket connection error connecting to sandbox at www.sandbox.paypal.com

Question

When I try connect with fsockopen:

$fp = fsockopen(\'tls://www.sandbox.paypal.com\', 443, $errno, $errstr, 30);

The function shows

Answer 1

Thank you, the problem is due the version of tls in my server:

PayPal Answer

PayPal implemented security upgrade in sandbox environment recently

PayPal implemented security upgrade in sandbox environment recently, refer to https://www.paypal-knowledge.com/infocenter/index?page=content&widgetview=true&id=FAQ1913&viewlocale=en_EN

SSL Certificate Upgrade Guide https://www.paypal-knowledge.com/infocenter/index?page=content&widgetview=true&id=FAQ1766&viewlocale=en_US