WP Simple Pay: Block Duplicate Email Addresses

/** * @link https://library.wpcode.com/snippet/ro8xmx35/ */ add_action( ‘simpay_before_payment_create’, /** * @param \WP_REST_Request WordPress REST API request. */ function( $request ) { // Retrieve form values. $fields = $request->get_param( ‘form_values’ ); $email = $fields[‘simpay_email’]; // Search for customers based on email. $customers…Continue reading