Someone

$firstString = "http://";
$positionFirstString = strpos(htmlspecialchars($zf_items[$i]['link']), $firstString);
$firstLength = strlen($firstString);
$blanc="";
$linkresult = htmlspecialchars($zf_items[$i]['link']);
$linkresults = implode('', $linkresult);
substr($blanc,$positionFirstString+$firstLength,$linkresult);
$html = str_replace('{link}', $linkresult, $html);