竟然还是这里:
<!--
EOT;
if ($read['atusers']){
$atusersHtml = '';
foreach($read['atusers'] as $v){
$cardusername = urlencode($v);
$atusersHtml .= " <a href=\"u.php?username=$v\" target=\"_blank\" class=\"s4 _cardshow\" data-card-url=\"pw_ajax.php?action=smallcard&type=showcard&username={$cardusername}\" data-card-key=\"{$v}\">@{$v}</a>";
}print <<<EOT
-->
<div class="at_icon mb10">本帖提到的人: $atusersHtml</div>