I have no idea why, but out of nowhere ReCaptcha stopped working on both SU and S@h.
Changing an arg to the recaptcha constructor
(from a Stack Overflow entry from 2015) fixed the problem.
On IE11, pages using recaptcha (like profile edit)
weren't showing the recaptcha.
On reloading, it would appear.
Mysterious.
Anyway, removing the
'<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8" >
fixed the problem.
This version allows the use of alternative RequestMethods in case get_file_contents() is disabled for security reasons. Currently it uses fsockopen() but it can also use php-curl. Include inc/recaptchalib.php into the file where the reCaptcha is shown or validated. The function boinc_recaptcha_isValidated() is a convenient wrapper that can be updated for future versions or changes of the RequestMethod used.
David Anderson