When a user posts a review for a Listing, the review will be held in the system, the website admin will be notified via email, and the review will be released when/if the website admin approves it.
// HOLD ALL REVIEWS FOR MODERATION AND NOTIFY WEBSITE ADMIN
add_filter( 'pre_comment_approved', function( $commentstatus, $commentdata ) {
$commentstatus = 0;
return $commentstatus;
}, 10, 2 );
add_filter( 'wp_update_comment_data', function( $data, $comment, $commentarr ) {
if ( isset( $data['comment_approved'] ) ) {
$data['comment_approved'] = 0;
}
return $data;
}, 99, 3 );