Try this:
$email = types_render_field (“email”);
if (!empty($email)) {
?>
“>; ?/>/images/icon-email.gif” width=”24″ height=”24″ /></a><br />
<?php<br />
}<br />
?></p>
<p>The solution is generally !empty (not empty). But for details, take a few minutes and read up on this:<br />
<a href=){kind=icon}
http://php.net/manual/en/function.empty.php
isset might work better for you.
EDIT: Also, your $empty variable right after the mailto is missing a semicolon. ;)
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