Fatal error: Uncaught CurlException: 60: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed thrown

I’m getting error message: “Fatal error: Uncaught CurlException: 60: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed thrown in M:\Web\htdocs\FacebookApps\test\facebook.php on line 640” when I try to call the example.php file which was downloaded from Facebook PHP SDK.

I Googled and found out how to slove this issue.

To fix this problem, you need to modify the facebook.php file.

By adding the following two options to the default $CURL_OPTS, the problem should goes away.

CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_SSL_VERIFYHOST => 2

So, your public static $CURL_OPTS should become something like this:

  public static $CURL_OPTS = array(
    CURLOPT_CONNECTTIMEOUT => 10,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT        => 60,
    CURLOPT_USERAGENT      => 'facebook-php-2.0',
	CURLOPT_SSL_VERIFYPEER => false,
	CURLOPT_SSL_VERIFYHOST => 2
  );