1 – Replace WooCommerce default PayPal logo

/*
 * Replace WooCommerce default PayPal icon
 */
function paypal_checkout_icon() {
 return 'https://www.paypalobjects.com/webstatic/mktg/logo-center/logo_betalen_met_paypal_nl.jpg'; // write your own image URL here
}
add_filter( 'woocommerce_paypal_icon', 'paypal_checkout_icon' );

2 – Replace default product placeholder image

/*
* goes in theme functions.php or a custom plugin. Replace the image filename/path with your own 🙂
*
**/
add_action( 'init', 'custom_fix_thumbnail' );
 
function custom_fix_thumbnail() {
  add_filter('woocommerce_placeholder_img_src', 'custom_woocommerce_placeholder_img_src');
   
	function custom_woocommerce_placeholder_img_src( $src ) {
	$upload_dir = wp_upload_dir();
	$uploads = untrailingslashit( $upload_dir['baseurl'] );
	$src = $uploads . '/2012/07/thumb1.jpg';
	 
	return $src;
	}
}

3 – Remove “Products” from breadcrumb

/*
 * Hide "Products" in WooCommerce breadcrumb
 */
function woo_custom_filter_breadcrumbs_trail ( $trail ) {
  foreach ( $trail as $k => $v ) {
    if ( strtolower( strip_tags( $v ) ) == 'products' ) {
      unset( $trail[$k] );
      break;
    }
  }

  return $trail;
}

add_filter( 'woo_breadcrumbs_trail', 'woo_custom_filter_breadcrumbs_trail', 10 );

4 – Empty cart

/*
 * Empty WooCommerce cart
 */
function my_empty_cart(){
	global $woocommerce;
	$woocommerce->cart->empty_cart(); 
}
add_action('init', 'my_empty_cart');

5 – Automatically add product to cart on visit

/*
 * Add item to cart on visit
 */
function add_product_to_cart() {
	if ( ! is_admin() ) {
		global $woocommerce;
		$product_id = 64;
		$found = false;
		//check if product already in cart
		if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) {
			foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {
				$_product = $values['data'];
				if ( $_product->id == $product_id )
					$found = true;
			}
			// if product not found, add it
			if ( ! $found )
				$woocommerce->cart->add_to_cart( $product_id );
		} else {
			// if no products in cart, add it
			$woocommerce->cart->add_to_cart( $product_id );
		}
	}
}
add_action( 'init', 'add_product_to_cart' );

6 – Add a custom currency / symbol

add_filter( 'woocommerce_currencies', 'add_my_currency' );
 
function add_my_currency( $currencies ) {
     $currencies['ABC'] = __( 'Currency name', 'woocommerce' );
     return $currencies;
}
 
add_filter('woocommerce_currency_symbol', 'add_my_currency_symbol', 10, 2);
 
function add_my_currency_symbol( $currency_symbol, $currency ) {
     switch( $currency ) {
          case 'ABC': $currency_symbol = '$'; break;
     }
     return $currency_symbol;
}

7 – Change add to cart button text

/**
 * Change the add to cart text on single product pages
 */
function woo_custom_cart_button_text() {
	return __('My Button Text', 'woocommerce');
}
add_filter('single_add_to_cart_text', 'woo_custom_cart_button_text');



/**
 * Change the add to cart text on product archives
 */
function woo_archive_custom_cart_button_text() {
	return __( 'My Button Text', 'woocommerce' );
}
add_filter( 'add_to_cart_text', 'woo_archive_custom_cart_button_text' );

8 – Redirect subscription add to cart to checkout page

/**
 * Redirect subscription add to cart to checkout page
 *
 * @param string $url
 */
function custom_add_to_cart_redirect( $url ) {
  
  $product_id	= (int) $_REQUEST['add-to-cart'];
	if ( class_exists( 'WC_Subscriptions_Product' ) ) {
		if ( WC_Subscriptions_Product::is_subscription( $product_id ) ) {
			return get_permalink(get_option( 'woocommerce_checkout_page_id' ) );
		} else return $url;
	} else return $url;
	
}
add_filter('add_to_cart_redirect', 'custom_add_to_cart_redirect');

9 – Redirect to checkout page after add to cart

/**
 * Redirect subscription add to cart to checkout page
 *
 * @param none
 */
function add_to_cart_checkout_redirect() {
	wp_safe_redirect( get_permalink( get_option( 'woocommerce_checkout_page_id' ) ) );
	die();
}
add_action( 'woocommerce_add_to_cart',  'add_to_cart_checkout_redirect', 11 );

10 – CC all emails

 /**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Add another email recipient to all WooCommerce emails
 *
 */
function woo_cc_all_emails() {
  return 'Bcc: [email protected]' . "\r\n";
}
add_filter('woocommerce_email_headers', 'woo_cc_all_emails' );

11 – Send an email when a new order is completed with coupons used

/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Send an email each time an order with coupon(s) is completed
 * The email contains coupon(s) used during checkout process
 *
 */ 
function woo_email_order_coupons( $order_id ) {
        $order = new WC_Order( $order_id );
        
        if( $order->get_used_coupons() ) {
        
          $to = '[email protected]';
	        $subject = 'New Order Completed';
	        $headers = 'From: My Name ' . "\r\n";
	        
	        $message = 'A new order has been completed.\n';
	        $message .= 'Order ID: '.$order_id.'\n';
	        $message .= 'Coupons used:\n';
	        
	        foreach( $order->get_used_coupons() as $coupon) {
		        $message .= $coupon.'\n';
	        }
	        @wp_mail( $to, $subject, $message, $headers );
        }
}
add_action( 'woocommerce_thankyou', 'woo_email_order_coupons' );

12 – Change related products number

/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Change number of related products on product page
 * Set your own value for 'posts_per_page'
 *
 */ 
function woo_related_products_limit() {
  global $product;
	
	$args = array(
		'post_type'        		=> 'product',
		'no_found_rows'    		=> 1,
		'posts_per_page'   		=> 6,
		'ignore_sticky_posts' 	=> 1,
		'orderby'             	=> $orderby,
		'post__in'            	=> $related,
		'post__not_in'        	=> array($product->id)
	);
	return $args;
}
add_filter( 'woocommerce_related_products_args', 'woo_related_products_limit' );

13 – Exclude products from a particular category on the shop page

 /**
 * Remove products from shop page by category
 *
 */
function woo_custom_pre_get_posts_query( $q ) {
 
	if ( ! $q->is_main_query() ) return;
	if ( ! $q->is_post_type_archive() ) return;
	
	if ( ! is_admin() && is_shop() ) {
 
		$q->set( 'tax_query', array(array(
			'taxonomy' => 'product_cat',
			'field' => 'slug',
			'terms' => array( 'shoes' ), // Don't display products in the shoes category on the shop page
			'operator' => 'NOT IN'
		)));
	
	}
 
	remove_action( 'pre_get_posts', 'custom_pre_get_posts_query' );
 
}
add_action( 'pre_get_posts', 'woo_custom_pre_get_posts_query' );

14 – Change shop columns number

/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Change product columns number on shop pages
 *
 */
function woo_product_columns_frontend() {
    global $woocommerce;

    // Default Value also used for categories and sub_categories
    $columns = 4;

    // Product List
    if ( is_product_category() ) :
        $columns = 4;
    endif;

    //Related Products
    if ( is_product() ) :
        $columns = 2;
    endif;

    //Cross Sells
    if ( is_checkout() ) :
        $columns = 4;
    endif;

	return $columns;
}
add_filter('loop_shop_columns', 'woo_product_columns_frontend');

15 – Disable WooCommerce tabs

 /**
 * Remove product tabs
 *
 */
function woo_remove_product_tab($tabs) {

    unset( $tabs['description'] );      		// Remove the description tab
    unset( $tabs['reviews'] ); 					// Remove the reviews tab
    unset( $tabs['additional_information'] );  	// Remove the additional information tab

 	return $tabs;
 
}
add_filter( 'woocommerce_product_tabs', 'woo_remove_product_tab', 98);

16 – Remove breadcrumb

 /**
 * Remove WooCommerce BreadCrumb
 *
 */
remove_action( 'woocommerce_before_main_content', 'woocommerce_breadcrumb', 20);

17 – Restrict shipping countries list

/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Restrict shipping countries list
 *
 */
function woo_override_checkout_fields( $fields ) { 

	$fields['shipping']['shipping_country'] = array(
		'type'      => 'select',
		'label'     => __('My New Country List', 'woocommerce'),
		'options' 	=> array('AU' => 'Australia')
	);

	return $fields; 
} 
add_filter( 'woocommerce_checkout_fields' , 'woo_override_checkout_fields' );

18 – Replace “Free!” product string

/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Replace "Free!" by a custom string
 *
 */
function woo_my_custom_free_message() {
	return "This product is FREE!";
}

add_filter('woocommerce_free_price_html', 'woo_my_custom_free_message');

19 – Hide ALL other shipping methods when Free Shipping is available

// Hide ALL shipping options when free shipping is available
add_filter( 'woocommerce_available_shipping_methods', 'hide_all_shipping_when_free_is_available' , 10, 1 );
 
/**
* Hide ALL Shipping option when free shipping is available
*
* @param array $available_methods
*/
function hide_all_shipping_when_free_is_available( $available_methods ) {
 
  	if( isset( $available_methods['free_shipping'] ) ) :
		
		// Get Free Shipping array into a new array
		$freeshipping = array();
		$freeshipping = $available_methods['free_shipping'];
 
		// Empty the $available_methods array
		unset( $available_methods );
 
		// Add Free Shipping back into $avaialble_methods
		$available_methods = array();
		$available_methods[] = $freeshipping;
 
	endif;
 
	return $available_methods;
}

20 – Make checkout “state” field not required

/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Make "state" field not required on checkout
 *
 */
 
add_filter( 'woocommerce_billing_fields', 'woo_filter_state_billing', 10, 1 );
add_filter( 'woocommerce_shipping_fields', 'woo_filter_state_shipping', 10, 1 );

function woo_filter_state_billing( $address_fields ) { 
	$address_fields['billing_state']['required'] = false;
	return $address_fields;
}

function woo_filter_state_shipping( $address_fields ) { 
	$address_fields['shipping_state']['required'] = false;
	return $address_fields;
}

21 – Create a coupon programatically

$coupon_code = 'UNIQUECODE'; // Code
$amount = '10'; // Amount
$discount_type = 'fixed_cart'; // Type: fixed_cart, percent, fixed_product, percent_product
					
$coupon = array(
	'post_title' => $coupon_code,
	'post_content' => '',
	'post_status' => 'publish',
	'post_author' => 1,
	'post_type'		=> 'shop_coupon'
);
					
$new_coupon_id = wp_insert_post( $coupon );
					
// Add meta
update_post_meta( $new_coupon_id, 'discount_type', $discount_type );
update_post_meta( $new_coupon_id, 'coupon_amount', $amount );
update_post_meta( $new_coupon_id, 'individual_use', 'no' );
update_post_meta( $new_coupon_id, 'product_ids', '' );
update_post_meta( $new_coupon_id, 'exclude_product_ids', '' );
update_post_meta( $new_coupon_id, 'usage_limit', '' );
update_post_meta( $new_coupon_id, 'expiry_date', '' );
update_post_meta( $new_coupon_id, 'apply_before_tax', 'yes' );
update_post_meta( $new_coupon_id, 'free_shipping', 'no' );

22 – Change email subject lines

/*
 * Subject filters: 
 *   woocommerce_email_subject_new_order
 *   woocommerce_email_subject_customer_procesing_order
 *   woocommerce_email_subject_customer_completed_order
 *   woocommerce_email_subject_customer_invoice
 *   woocommerce_email_subject_customer_note
 *   woocommerce_email_subject_low_stock
 *   woocommerce_email_subject_no_stock
 *   woocommerce_email_subject_backorder
 *   woocommerce_email_subject_customer_new_account
 *   woocommerce_email_subject_customer_invoice_paid
 **/
add_filter('woocommerce_email_subject_new_order', 'change_admin_email_subject', 1, 2);
 
function change_admin_email_subject( $subject, $order ) {
	global $woocommerce;
 
	$blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);
 
	$subject = sprintf( '[%s] New Customer Order (# %s) from Name %s %s', $blogname, $order->id, $order->billing_first_name, $order->billing_last_name );
 
	return $subject;
}

23 – Add custom fee to cart

/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Add custom fee to cart automatically
 *
 */
function woo_add_cart_fee() {

	global $woocommerce;
	
	if ( is_cart() ) {
		$woocommerce->cart->add_fee( __('Custom', 'woocommerce'), 5 );
	}
	
}
add_action( 'woocommerce_before_cart_table', 'woo_add_cart_fee' );

24 – Custom added to cart message

/**
 * Custom Add To Cart Messages
 * Add this to your theme functions.php file
 **/
add_filter( 'woocommerce_add_to_cart_message', 'custom_add_to_cart_message' );
function custom_add_to_cart_message() {
	global $woocommerce;
 
	// Output success messages
	if (get_option('woocommerce_cart_redirect_after_add')=='yes') :
 
		$return_to 	= get_permalink(woocommerce_get_page_id('shop'));
 
		$message 	= sprintf('<a href="%s" class="button">%s</a> %s', $return_to, __('Continue Shopping &rarr;', 'woocommerce'), __('Product successfully added to your cart.', 'woocommerce') );
 
	else :
 
		$message 	= sprintf('<a href="%s" class="button">%s</a> %s', get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), __('Product successfully added to your cart.', 'woocommerce') );
 
	endif;
 
		return $message;
}

25 – Add payment method to admin email

/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Add payment method to admin new order email
 *
 */
add_action( 'woocommerce_email_after_order_table', 'woo_add_payment_method_to_admin_new_order', 15, 2 ); 

function woo_add_payment_method_to_admin_new_order( $order, $is_admin_email ) { 
	if ( $is_admin_email ) { 
	echo '<p><strong>Payment Method:</strong> ' . $order->payment_method_title . '</p>'; 
	} 
}

 

24 đoạn code ngắn hữu ích dành cho Woocommerce – Phần 2
3 (60%) 2 votes