<s*as*hrefs*=s*".*"s*>(.{4,20}?)</a>
<h3>(.{4,35})</h3>

//preg_match_all("<h1.*?>(.{4,})</h1>", $content, $x);
//preg_match_all('<as*href="?.*"s*>(.{4,50})</a>', $content, $x);