$html = file_get_contents('source.html');
//$url = "http://46.4.130.245:8080/scripts/grabber/serp-test.php?site=semyadro.pro";

preg_match_all("#span class='big'>(.*?)<#", $html, $loss);

$res['poterianie'] = $loss[1][0];
$res['viroschie'] = $loss[1][1];
$res['prosevschie'] = $loss[1][2];
$res['novie'] = $loss[1][3];

preg_match_all('#<div class='color_main || medium'>(.*?)</div>#', $html, $sites);// fatal error here(