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✏️ Editing: class.yith-woocompare-helper.php

<?php
/**
 * Main class
 *
 * @author Your Inspiration Themes
 * @package YITH WooCommerce Compare
 * @version 1.1.4
 */

if ( !defined( 'YITH_WOOCOMPARE' ) ) { exit; } // Exit if accessed directly

if( !class_exists( 'YITH_Woocompare_Helper' ) ) {
    /**
     * YITH Woocommerce Compare helper
     *
     * @since 1.0.0
     */
    class YITH_Woocompare_Helper {

/**
         * Set the image size used in the comparison table
         *
         * @since 1.0.0
         */
        public static function set_image_size() {
            $size = get_option( 'yith_woocompare_image_size' );

if( ! $size ) {
                return;
            }

$size['crop'] = isset( $size['crop'] ) ? true : false;
            add_image_size( 'yith-woocompare-image', $size['width'], $size['height'], $size['crop'] );
        }

/*
         * The list of standard fields
         *
         * @since 1.0.0
         * @access public
         * @param Boolean $with_attr
         */
        public static function standard_fields( $with_attr = true ) {

global $sitepress;

$lang = isset( $_REQUEST['lang'] ) ? $_REQUEST['lang'] : false;

if( defined( 'ICL_LANGUAGE_CODE' ) && $lang && isset( $sitepress ) ) {
                $sitepress->switch_lang( $lang, true );
            }

$fields = array(
	            'product_info'  => __( 'Product Info', 'yith-woocommerce-compare' ),
                'price'         => __( 'Price', 'yith-woocommerce-compare' ),
		        'rating'        => __( 'Rating', 'yith-woocommerce-compare' ),
                'description'   => __( 'Description', 'yith-woocommerce-compare' ),
                'stock'         => __( 'Availability', 'yith-woocommerce-compare' ),
                'weight'        => __( 'Weight', 'yith-woocommerce-compare' ),
                'dimensions'    => __( 'Dimensions', 'yith-woocommerce-compare' ),
            );

if( $with_attr )
		        $fields = array_merge( $fields, YITH_Woocompare_Helper::attribute_taxonomies() );

return $fields;
        }

/*
         * Get Woocommerce Attribute Taxonomies
         *
         * @since 1.0.0
         * @access public
         */
        public static function attribute_taxonomies() {
            global $woocommerce;

if ( ! isset( $woocommerce ) ) return array();

$attributes = array();

if( function_exists( 'wc_get_attribute_taxonomies' ) && function_exists( 'wc_attribute_taxonomy_name' ) ) {
                $attribute_taxonomies = wc_get_attribute_taxonomies();
                if( empty( $attribute_taxonomies ) )
	                return array();
                foreach( $attribute_taxonomies as $attribute ) {
                    $tax = wc_attribute_taxonomy_name( $attribute->attribute_name );
                    if ( taxonomy_exists( $tax ) ) {
                        $attributes[$tax] = ucfirst( $attribute->attribute_name );
                    }
                }
            }
            else{
                $attribute_taxonomies = $woocommerce->get_attribute_taxonomies();
                if( empty( $attribute_taxonomies ) )
	                return array();
                foreach( $attribute_taxonomies as $attribute ) {
                    $tax = $woocommerce->attribute_taxonomy_name( $attribute->attribute_name );
                    if ( taxonomy_exists( $tax ) ) {
                        $attributes[$tax] = ucfirst( $attribute->attribute_name );
                    }
                }
            }

return $attributes;
        }

}
}

MR SKB