woocommerce image alt and title tag add

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add_filter('wp_get_attachment_image_attributes', 'change_attachement_image_attributes', 20, 2);
function change_attachement_image_attributes( $attr, $attachment ) {
// Get post parent
$parent = get_post_field( 'post_parent', $attachment);

// Get post type to check if it's product
$type = get_post_field( 'post_type', $parent);
if( $type != 'product' ){
return $attr;
}

/// Get title
$title = get_post_field( 'post_title', $parent);

if( $attr['alt'] == ''){
$attr['alt'] = $title;
$attr['title'] = $title;
}

return $attr;
}