Description:
------------
Error Control Operator not working properly when we want to handle some errors in own code. Instead of it we must use some hack described here: http://stackoverflow.com/questions/19116320/suppress-stream-socket-client-warnings


Test script:
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$resource = @stream_socket_client($uri, $errno, $errstr, (float) $timeout, $flags);

if (!$resource) {
    $this->onConnectionError(trim($errstr), $errno);
}

Expected result:
----------------
Warning: stream_socket_client(): unable to connect to tcp://localhost:6379 (Connection refused) in ../file.php on line 94

Actual result:
--------------
Nothing