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📁 ..
📁 abstracts
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📄 class-wc-ajax.php(119.74 KB)
📄 class-wc-auth.php(12.69 KB)
📄 class-wc-autoloader.php(3.32 KB)
📄 class-wc-background-emailer.php(4.58 KB)
📄 class-wc-background-updater.php(3.45 KB)
📄 class-wc-brands-brand-settings-manager.php(1.78 KB)
📄 class-wc-brands-coupons.php(6.89 KB)
📄 class-wc-brands.php(32.93 KB)
📄 class-wc-breadcrumb.php(9.49 KB)
📄 class-wc-cache-helper.php(12.65 KB)
📄 class-wc-cart-fees.php(3.37 KB)
📄 class-wc-cart-session.php(21.18 KB)
📄 class-wc-cart-totals.php(28.48 KB)
📄 class-wc-cart.php(71.23 KB)
📄 class-wc-checkout.php(50.15 KB)
📄 class-wc-cli.php(3.34 KB)
📄 class-wc-comments.php(22.63 KB)
📄 class-wc-countries.php(49.16 KB)
📄 class-wc-coupon.php(39.93 KB)
📄 class-wc-customer-download-log.php(3.37 KB)
📄 class-wc-customer-download.php(10.34 KB)
📄 class-wc-customer.php(32.54 KB)
📄 class-wc-data-exception.php(1.29 KB)
📄 class-wc-data-store.php(6.59 KB)
📄 class-wc-datetime.php(2.26 KB)
📄 class-wc-deprecated-action-hooks.php(6.59 KB)
📄 class-wc-deprecated-filter-hooks.php(7.34 KB)
📄 class-wc-discounts.php(36.64 KB)
📄 class-wc-download-handler.php(28.37 KB)
📄 class-wc-emails.php(38.15 KB)
📄 class-wc-embed.php(4.24 KB)
📄 class-wc-form-handler.php(45.89 KB)
📄 class-wc-frontend-scripts.php(29.76 KB)
📄 class-wc-geo-ip.php(30.41 KB)
📄 class-wc-geolite-integration.php(1.99 KB)
📄 class-wc-geolocation.php(11.32 KB)
📄 class-wc-https.php(4.33 KB)
📄 class-wc-install.php(108.25 KB)
📄 class-wc-integrations.php(1.28 KB)
📄 class-wc-log-levels.php(3.9 KB)
📄 class-wc-logger.php(9.38 KB)
📄 class-wc-meta-data.php(2.21 KB)
📄 class-wc-order-factory.php(8.52 KB)
📄 class-wc-order-item-coupon.php(4.08 KB)
📄 class-wc-order-item-fee.php(9.21 KB)
📄 class-wc-order-item-meta.php(5.8 KB)
📄 class-wc-order-item-product.php(15.84 KB)
📄 class-wc-order-item-shipping.php(8.8 KB)
📄 class-wc-order-item-tax.php(6.49 KB)
📄 class-wc-order-item.php(18.54 KB)
📄 class-wc-order-query.php(2.55 KB)
📄 class-wc-order-refund.php(5.99 KB)
📄 class-wc-order.php(75.39 KB)
📄 class-wc-payment-gateways.php(15.73 KB)
📄 class-wc-payment-tokens.php(6.24 KB)
📄 class-wc-post-data.php(34.55 KB)
📄 class-wc-post-types.php(32 KB)
📄 class-wc-privacy-background-process.php(1.79 KB)
📄 class-wc-privacy-erasers.php(13.61 KB)
📄 class-wc-privacy-exporters.php(14.69 KB)
📄 class-wc-privacy.php(17.22 KB)
📄 class-wc-product-attribute.php(6.97 KB)
📄 class-wc-product-download.php(12.25 KB)
📄 class-wc-product-external.php(4.98 KB)
📄 class-wc-product-factory.php(3.88 KB)
📄 class-wc-product-grouped.php(6.53 KB)
📄 class-wc-product-query.php(2.28 KB)
📄 class-wc-product-simple.php(2.7 KB)
📄 class-wc-product-variable.php(22.41 KB)
📄 class-wc-product-variation.php(20.18 KB)
📄 class-wc-query.php(33.36 KB)
📄 class-wc-rate-limiter.php(4 KB)
📄 class-wc-regenerate-images-request.php(7.74 KB)
📄 class-wc-regenerate-images.php(15.44 KB)
📄 class-wc-register-wp-admin-settings.php(5.05 KB)
📄 class-wc-rest-authentication.php(21.55 KB)
📄 class-wc-rest-exception.php(276 B)
📄 class-wc-session-handler.php(22.54 KB)
📄 class-wc-shipping-rate.php(9.34 KB)
📄 class-wc-shipping-zone.php(13.08 KB)
📄 class-wc-shipping-zones.php(4.01 KB)
📄 class-wc-shipping.php(12.85 KB)
📄 class-wc-shortcodes.php(18.82 KB)
📄 class-wc-structured-data.php(23.73 KB)
📄 class-wc-tax.php(38.31 KB)
📄 class-wc-template-loader.php(20.28 KB)
📄 class-wc-tracker.php(49.37 KB)
📄 class-wc-validation.php(5.79 KB)
📄 class-wc-webhook.php(29.41 KB)
📄 class-woocommerce.php(59.56 KB)
📁 cli
📁 customizer
📁 data-stores
📁 emails
📁 export
📁 gateways
📁 import
📁 integrations
📁 interfaces
📁 legacy
📁 libraries
📁 log-handlers
📁 payment-tokens
📁 product-usage
📁 queue
📁 react-admin
📁 rest-api
📁 shipping
📁 shortcodes
📁 theme-support
📁 tracks
📁 traits
📁 walkers
📄 wc-account-functions.php(14.11 KB)
📄 wc-attribute-functions.php(21.85 KB)
📄 wc-brands-functions.php(4.17 KB)
📄 wc-cart-functions.php(21.05 KB)
📄 wc-conditional-functions.php(15.53 KB)
📄 wc-core-functions.php(86.78 KB)
📄 wc-coupon-functions.php(5.55 KB)
📄 wc-deprecated-functions.php(38.12 KB)
📄 wc-formatting-functions.php(49.85 KB)
📄 wc-notice-functions.php(8.08 KB)
📄 wc-order-functions.php(42.75 KB)
📄 wc-order-item-functions.php(5.03 KB)
📄 wc-order-step-logger-functions.php(5.01 KB)
📄 wc-page-functions.php(9.43 KB)
📄 wc-product-functions.php(57.36 KB)
📄 wc-rest-functions.php(13.92 KB)
📄 wc-stock-functions.php(17.13 KB)
📄 wc-template-functions.php(138.36 KB)
📄 wc-template-hooks.php(12.84 KB)
📄 wc-term-functions.php(23.84 KB)
📄 wc-update-functions.php(94.71 KB)
📄 wc-user-functions.php(34.2 KB)
📄 wc-webhook-functions.php(5.77 KB)
📄 wc-widget-functions.php(2.01 KB)
📁 wccom-site
📁 widgets

Editing: class-wc-product-attribute.php

<?php
/**
 * Represents a product attribute
 *
 * Attributes can be global (taxonomy based) or local to the product itself.
 * Uses ArrayAccess to be BW compatible with previous ways of reading attributes.
 *
 * @package WooCommerce\Classes
 * @version 3.0.0
 * @since   3.0.0
 */

defined( 'ABSPATH' ) || exit;

/**
 * Product attribute class.
 */
class WC_Product_Attribute implements ArrayAccess {

/**
	 * Data array.
	 *
	 * @since 3.0.0
	 * @var array
	 */
	protected $data = array(
		'id'        => 0,
		'name'      => '',
		'options'   => array(),
		'position'  => 0,
		'visible'   => false,
		'variation' => false,
	);

/**
	 * Return if this attribute is a taxonomy.
	 *
	 * @return boolean
	 */
	public function is_taxonomy() {
		return 0 < $this->get_id();
	}

/**
	 * Get taxonomy name if applicable.
	 *
	 * @return string
	 */
	public function get_taxonomy() {
		return $this->is_taxonomy() ? $this->get_name() : '';
	}

/**
	 * Get taxonomy object.
	 *
	 * @return array|null
	 */
	public function get_taxonomy_object() {
		global $wc_product_attributes;
		return $this->is_taxonomy() ? $wc_product_attributes[ $this->get_name() ] : null;
	}

/**
	 * Gets terms from the stored options.
	 *
	 * @return array|null
	 */
	public function get_terms() {
		if ( ! $this->is_taxonomy() || ! taxonomy_exists( $this->get_name() ) ) {
			return null;
		}
		$terms = array();
		foreach ( $this->get_options() as $option ) {
			if ( is_int( $option ) ) {
				$term = get_term_by( 'id', $option, $this->get_name() );
			} else {
				// Term names get escaped in WP. See sanitize_term_field.
				$term = get_term_by( 'name', $option, $this->get_name() );

if ( ! $term || is_wp_error( $term ) ) {
					$new_term = wp_insert_term( $option, $this->get_name() );
					$term     = is_wp_error( $new_term ) ? false : get_term_by( 'id', $new_term['term_id'], $this->get_name() );
				}
			}
			if ( $term && ! is_wp_error( $term ) ) {
				$terms[] = $term;
			}
		}
		return $terms;
	}

/**
	 * Gets slugs from the stored options, or just the string if text based.
	 *
	 * @return array
	 */
	public function get_slugs() {
		if ( ! $this->is_taxonomy() || ! taxonomy_exists( $this->get_name() ) ) {
			return $this->get_options();
		}
		$terms = array();
		foreach ( $this->get_options() as $option ) {
			if ( is_int( $option ) ) {
				$term = get_term_by( 'id', $option, $this->get_name() );
			} else {
				$term = get_term_by( 'name', $option, $this->get_name() );

/**
	 * Returns all data for this object.
	 *
	 * @return array
	 */
	public function get_data() {
		return array_merge(
			$this->data,
			array(
				'is_visible'   => $this->get_visible() ? 1 : 0,
				'is_variation' => $this->get_variation() ? 1 : 0,
				'is_taxonomy'  => $this->is_taxonomy() ? 1 : 0,
				'value'        => $this->is_taxonomy() ? '' : wc_implode_text_attributes( $this->get_options() ),
			)
		);
	}

/*
	|--------------------------------------------------------------------------
	| Setters
	|--------------------------------------------------------------------------
	*/

/**
	 * Set ID (this is the attribute ID).
	 *
	 * @param int $value Attribute ID.
	 */
	public function set_id( $value ) {
		$this->data['id'] = absint( $value );
	}

/**
	 * Set name (this is the attribute name or taxonomy).
	 *
	 * @param string $value Attribute name.
	 */
	public function set_name( $value ) {
		$this->data['name'] = $value;
	}

/**
	 * Set options.
	 *
	 * @param array $value Attribute options.
	 */
	public function set_options( $value ) {
		$this->data['options'] = $value;
	}

/**
	 * Set position.
	 *
	 * @param int $value Attribute position.
	 */
	public function set_position( $value ) {
		$this->data['position'] = absint( $value );
	}

/**
	 * Set if visible.
	 *
	 * @param bool $value If is visible on Product's additional info tab.
	 */
	public function set_visible( $value ) {
		$this->data['visible'] = wc_string_to_bool( $value );
	}

/**
	 * Set if variation.
	 *
	 * @param bool $value If is used for variations.
	 */
	public function set_variation( $value ) {
		$this->data['variation'] = wc_string_to_bool( $value );
	}

/*
	|--------------------------------------------------------------------------
	| Getters
	|--------------------------------------------------------------------------
	*/

/**
	 * Get the ID.
	 *
	 * @return int
	 */
	public function get_id() {
		return $this->data['id'];
	}

/**
	 * Get name.
	 *
	 * @return string
	 */
	public function get_name() {
		return $this->data['name'];
	}

/**
	 * Get options.
	 *
	 * @return array
	 */
	public function get_options() {
		return $this->data['options'];
	}

/**
	 * Get position.
	 *
	 * @return int
	 */
	public function get_position() {
		return $this->data['position'];
	}

/**
	 * Get if visible.
	 *
	 * @return bool
	 */
	public function get_visible() {
		return $this->data['visible'];
	}

/**
	 * Get if variation.
	 *
	 * @return bool
	 */
	public function get_variation() {
		return $this->data['variation'];
	}

/*
	|--------------------------------------------------------------------------
	| ArrayAccess/Backwards compatibility.
	|--------------------------------------------------------------------------
	*/

/**
	 * OffsetGet.
	 *
	 * @param string $offset Offset.
	 * @return mixed
	 */
	#[\ReturnTypeWillChange]
	public function offsetGet( $offset ) {
		switch ( $offset ) {
			case 'is_variation':
				return $this->get_variation() ? 1 : 0;
			case 'is_visible':
				return $this->get_visible() ? 1 : 0;
			case 'is_taxonomy':
				return $this->is_taxonomy() ? 1 : 0;
			case 'value':
				return $this->is_taxonomy() ? '' : wc_implode_text_attributes( $this->get_options() );
			default:
				if ( is_callable( array( $this, "get_$offset" ) ) ) {
					return $this->{"get_$offset"}();
				}
				break;
		}
		return '';
	}

/**
	 * OffsetSet.
	 *
	 * @param string $offset Offset.
	 * @param mixed  $value  Value.
	 */
	#[\ReturnTypeWillChange]
	public function offsetSet( $offset, $value ) {
		switch ( $offset ) {
			case 'is_variation':
				$this->set_variation( $value );
				break;
			case 'is_visible':
				$this->set_visible( $value );
				break;
			case 'value':
				$this->set_options( $value );
				break;
			default:
				if ( is_callable( array( $this, "set_$offset" ) ) ) {
					$this->{"set_$offset"}( $value );
				}
				break;
		}
	}

/**
	 * OffsetUnset.
	 *
	 * @param string $offset Offset.
	 */
	#[\ReturnTypeWillChange]
	public function offsetUnset( $offset ) {}

/**
	 * OffsetExists.
	 *
	 * @param string $offset Offset.
	 * @return bool
	 */
	#[\ReturnTypeWillChange]
	public function offsetExists( $offset ) {
		return in_array( $offset, array_merge( array( 'is_variation', 'is_visible', 'is_taxonomy', 'value' ), array_keys( $this->data ) ), true );
	}
}

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Editing: class-wc-product-attribute.php

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