Set the maximum order limits per day by PayPal payment gateway in WooCommerce

set-the-maximum-order-limits-per-day-by-paypal-payment.php

// Hook into the 'woocommerce_checkout_process' action
add_action( 'woocommerce_checkout_process', 'restrict_gateway_orders_per_day' );

function restrict_gateway_orders_per_day() {
    // Set the maximum number of orders allowed per day
    $max_orders_per_day = 20;

    // Get the current date
    $current_date = date( 'Y-m-d' );

    // Get the total number of orders for the specific gateway on the current date
    $orders = wc_get_orders( array(
        'status'        => array( 'completed', 'processing' ), // Include only completed and processing orders
        'date_created'  => '>=' . strtotime( $current_date . ' 00:00:00' ),
        'payment_method'=> 'paypal', // Replace 'paypal' with your desired gateway
    ) );

    $order_count = count( $orders );

    // If the maximum number of orders has been reached, display an error message
    if ( $order_count >= $max_orders_per_day ) {
        wc_add_notice( __( 'Sorry, we have reached the maximum number of orders for today.', 'woocommerce' ), 'error' );
    }
}