在 WooCommerce 3+ 中以编程方式创建多个优惠券

Question

In wooCommerce, I am using the following code to create programmatically a single coupon:

 $coupon_amount = '20'; $code_value = wp_generate_password( 15, false ); $coupon_code = $code_value; $expiry_date = date('Ym-d', strtotime('+140 days')); function create_coupon_codes($coupon_amount, $coupon_code, $expiry_date, $email_address) { global $wpdb; $sql = $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type = 'shop_coupon' AND post_status = 'publish' ORDER BY post_date DESC LIMIT 1;", $coupon_code ); $coupon_id = $wpdb->get_var( $sql ); if ( empty( $coupon_id ) ) { $coupon = array( 'post_title' => $coupon_code, 'post_content' => '', 'post_status' => 'publish', 'post_author' => 1, 'post_type' => 'shop_coupon' ); $newcouponid = wp_insert_post( $coupon ); update_post_meta( $newcouponid, 'product_ids', '' ); update_post_meta( $newcouponid, 'exclude_product_ids', '' ); update_post_meta( $newcouponid, 'discount_type', 'store_credit' ); update_post_meta( $newcouponid, 'free_shipping', 'no' ); update_post_meta( $newcouponid, 'coupon_amount', $coupon_amount ); update_post_meta( $newcouponid, 'individual_use', 'yes' ); update_post_meta( $newcouponid, 'expiry_date', $expiry_date ); update_post_meta( $newcouponid, 'usage_limit', '1' ); update_post_meta( $newcouponid, 'apply_before_tax', 'yes' ); update_post_meta( $newcouponid, 'customer_email', $email_address ); } } create_coupon_codes($coupon_amount, $coupon_code, $expiry_date, $email_address);

It's working fine. As you can see, the coupon code (coupon name) is auto generated using wp_generate_password() WordPress function.

Now I would like to create multiple coupons (instead a single user) with multiple discount amounts and multiple expiry dates and multiple coupon codes.

How can I create multiple coupons programmatically in WooCommerce with multiple discount amounts?

Answer 1

Your code is not applying (or adding a coupon)… It's "creating" a new coupon! .

since WooCommerce 3, your code is a bit outdated. Instead you should better use the available WC_Coupon setter methods like in the code below.

As you are generating the coupon code name with wp_generate_password() function, you need to check that the new generated coupon code doesn't exist yet, as WooCommerce requires that each coupons code name is unique (see below a custom function for that purpose) .

To generate multiple coupons, you can just make a foreach loop that will iterate through a defined array of coupons costs .

1). First a utility function to generate unique non existing coupon names (coupon codes) :

// Utility function that generate a non existing coupon code (as each coupon code has to be unique)
function generate_coupon_code() {
    global $wpdb;
    
    // Get an array of all existing coupon codes
    $coupon_codes = $wpdb->get_col("SELECT post_name FROM $wpdb->posts WHERE post_type = 'shop_coupon'");
    
    for ( $i = 0; $i < 1; $i++ ) {
        $generated_code = strtolower( wp_generate_password( 15, false ) );
        
        // Check if the generated code doesn't exist yet
        if( in_array( $generated_code, $coupon_codes ) ) {
            $i--; // continue the loop and generate a new code
        } else {
            break; // stop the loop: The generated coupon code doesn't exist already
        }
    }
    return $generated_code;
}   

Code goes in functions.php file of your active child theme (or active theme).

---

2). Now the code with the foreach loop WC_Coupon setter methods to generate multiple coupons based on a defined array of coupon discount amounts (replaced non existing 'store_credit' coupon type by 'fixed_cart') :

// Here below define your coupons discount amount
$discount_amounts = array( 12, 18, 15, 10 );

// Set some coupon data by default
$date_expires     = date('Y-m-d', strtotime('+371 days'));
$discount_type    = 'fixed_cart'; // 'store_credit' doesn't exist

// Loop through the defined array of coupon discount amounts
foreach( $discount_amounts as $coupon_amount ) {
    // Get an emty instance of the WC_Coupon Object
    $coupon = new WC_Coupon();
    
    // Generate a non existing coupon code name
    $coupon_code  = generate_coupon_code();

    // Set the necessary coupon data (since WC 3+)
    $coupon->set_code( $coupon_code );
    $coupon->set_discount_type( $discount_type );
    $coupon->set_amount( $coupon_amount );
    
    $coupon->set_date_expires( $date_expires );
    $coupon->set_usage_limit( 1 );
    $coupon->set_individual_use( true );

    // Create, publish and save coupon (data)
    $coupon->save();
}

Tested and works.

Notes:

• "expiry_date" property is replaced by "date_expires"
• apply_before_tax property doesn't exist anymore
• "free_shipping" is always set to false (no) by default