function wpcf7_akismet_comment_check($comment)
{
global $akismet_api_host, $akismet_api_port;
$spam = false;
$query_string = wpcf7_build_query($comment);
if (is_callable(array('Akismet', 'http_post'))) {
// Akismet v3.0+
$response = Akismet::http_post($query_string, 'comment-check');
} else {
$response = akismet_http_post($query_string, $akismet_api_host, '/1.1/comment-check', $akismet_api_port);
}
if ('true' == $response[1]) {
$spam = true;
}
if ($submission = WPCF7_Submission::get_instance()) {
$submission->akismet = array('comment' => $comment, 'spam' => $spam);
}
return apply_filters('wpcf7_akismet_comment_check', $spam, $comment);
}
function wpcf7_build_query($args, $key = '')
{
$sep = '&';
$ret = array();
foreach ((array) $args as $k => $v) {
$k = urlencode($k);
if (!empty($key)) {
$k = $key . '%5B' . $k . '%5D';
}
if (null === $v) {
continue;
} elseif (false === $v) {
$v = '0';
}
if (is_array($v) || is_object($v)) {
array_push($ret, wpcf7_build_query($v, $k));
} else {
array_push($ret, $k . '=' . urlencode($v));
}
}
return implode($sep, $ret);
}