$postdata = http_build_query(
array(
'js' => '1',
'search' => 'Ситникова'
)
);
$opts = array('http' =>
array(
'method' => 'POST',
'header' => 'Content-type: application/x-www-form-urlencoded',
'content' => $postdata
)
);
$context = stream_context_create($opts);
$result = file_get_contents('https://www.sgu.ru/schedule/teacher/search', false, $context);
echo $result;