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If we 404, and the slug matches a pmpro discount code, redirect
If we 404, and the slug matches a discount code, redirect
Add this code to a custom plugin
function my_pmpro_pre_handle_404($preempt, $wp_query) {
global $wpdb;
//bail if PMPro is not installed
return $preempt;
//look for a code
$possible_code = sanitize_text_field(str_replace('/', '', strtolower($_SERVER['REQUEST_URI'])));
$code = $wpdb->get_row("SELECT * FROM $wpdb->pmpro_discount_codes WHERE code = '" . esc_sql($possible_code) . "' LIMIT 1");
//redirect to checkout for the first level found
if(!empty($code)) {
$code_level = $wpdb->get_row("SELECT * FROM $wpdb->pmpro_discount_codes_levels WHERE code_id = '" . $code->id . "' ORDER BY initial_payment DESC");
//found one, redirect
if($code_level) {
wp_redirect(pmpro_url('checkout', '?level=' . $code_level->level_id . '&discount_code=' . $code->code));
return $preempt;
add_filter('pre_handle_404', 'my_pmpro_pre_handle_404', 10, 2);
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