Description:
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I've used exactly socks connections.
This code create this problem:

php hang on this line with curl_exec function

Reproduce code:
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$hCurl = curl_init();
curl_setopt ($hCurl, CURLOPT_URL, "http://google.com");
curl_setopt ($hCurl, CURLOPT_HEADER, 0);
curl_setopt ($hCurl, CURLOPT_PROXY, "66.210.89.130:1080");
curl_setopt ($hCurl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
curl_setopt ($hCurl, CURLOPT_TIMEOUT, 7);
curl_setopt ($hCurl, CURLOPT_CONNECTTIMEOUT, 7);
curl_setopt ($hCurl, CURLE_OPERATION_TIMEOUTED, 7);
curl_setopt ($hCurl, CURLOPT_DNS_CACHE_TIMEOUT, 7);
curl_setopt ($hCurl, CURLOPT_RETURNTRANSFER, 1);
print 'before curl_exec';
$out = curl_exec ($hCurl);
print $out;

Expected result:
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Expected exit from the function under the specified timeout.