function devvn_wc_custom_get_price_html( $price, $product ) {

if ( $product->get_price() == 0 ) {

if ( $product->is_on_sale() && $product->get_regular_price() ) {

$regular_price = wc_get_price_to_display( $product, array( 'qty' => 1, 'price' => $product->get_regular_price() ) );
$price = wc_format_price_range( $regular_price, __( 'Free!', 'woocommerce' ) );

} else {

$price = '<span class="amount">' . __( 'Liên hệ', 'woocommerce' ) . '</span>';

}

}

return $price;

}

add_filter( 'woocommerce_get_price_html', 'devvn_wc_custom_get_price_html', 10, 2 );

Chuyển giá thành “Liên hệ” khi hết hàng

function devvn_oft_custom_get_price_html( $price, $product ) {

if ( !is_admin() && !$product->is_in_stock()) {

$price = '<span class="amount">' . __( 'Liên hệ', 'woocommerce' ) . '</span>';

}

return $price;

}

add_filter( 'woocommerce_get_price_html', 'devvn_oft_custom_get_price_html', 99, 2 );