PHP에서 URL을 HTML 링크로 감지하고 변환하는 방법은 무엇입니까?

$rexProtocol = '(https?://)?';
$rexDomain   = '((?:[-a-zA-Z0-9]{1,63}\.)+[-a-zA-Z0-9]{2,63}|(?:[0-9]{1,3}\.){3}[0-9]{1,3})';
$rexPort     = '(:[0-9]{1,5})?';
$rexPath     = '(/[!$-/0-9:;=@_\':;!a-zA-Z\x7f-\xff]*?)?';
$rexQuery    = '(\?[!$-/0-9:;=@_\':;!a-zA-Z\x7f-\xff]+?)?';
$rexFragment = '(#[!$-/0-9:;=@_\':;!a-zA-Z\x7f-\xff]+?)?';

$rex = "&\b$rexProtocol$rexDomain$rexPort$rexPath$rexQuery$rexFragment(?=[?.!,;:\"]?(\s|$))&";

preg_match_all($rex, htmlspecialchars($text), $matches, PREG_OFFSET_CAPTURE);

foreach ($matches[0] as $match) {
    $url = $match[0];
    $domain = $matches[2][0];
    $path = $matches[4][0];

    $completeUrl = $matches[1][0] ? $url : "http://$url";

    $htmlLink = "<a href='$completeUrl'>$domain$path</a>";

    $text = str_replace($url, $htmlLink, $text);
}