<?php
$email = $review['email'];
$hash = md5($email);
$uri = 'http://www.gravatar.com/avatar/' . $hash . '?d=404';
$default = "https://www.somewhere.com/homestar.jpg";
$size = 50;
$headers = @get_headers($uri);
if (!preg_match("|200|", $headers[0])){
$grav_url = "catalog/view/theme/tbchoice/img/comment2.jpg";
} else {
$grav_url = "https://www.gravatar.com/avatar/" . md5( strtolower( trim( $email ) ) ) . "?d=" . urlencode( $default ) . "&s=" . $size;
}
?>