<?php

$replyText = "This is a http://s...content-available-to-author-only...e.sit/אבגדהוזחטיכךלמםנןסעפףצץקרשת link.";
$replyText = preg_replace('@(https?://([-\w\.]+[-\w])+(:\d+)?(/([\w/_\.#-]*(\?\S+)?[^\.\s])?)?)@u', '<a href="$1" target="_blank">$1</a>', $replyText);
echo $replyText;