Description:
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If you check an HTTP URL with get_headers() function which redirects to another HTTPS URL, NULL will returned. If the redirect-HTTPS-URL is checked directly, there is no error. extension=php_openssl.dll is enabled.

Reproduce code:
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works: get_headers('http://foo.com');
works: get_headers('http://foo.com?redirect=http://foo2.com');
don't work: get_headers('http://foo.com?redirect=https://foo2.com');

Expected result:
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array (HEADERS);
There should be no problem when a HTTP URL redirectes to an HTTPS URL

Actual result:
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NULL