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ðŸ“ ..
ðŸ“ abstracts
ðŸ“ admin
ðŸ“ blocks
ðŸ“„ class-wc-ajax.php(114.64 KB)
ðŸ“„ class-wc-auth.php(12.69 KB)
ðŸ“„ class-wc-autoloader.php(3.13 KB)
ðŸ“„ class-wc-background-emailer.php(4.58 KB)
ðŸ“„ class-wc-background-updater.php(3.45 KB)
ðŸ“„ class-wc-breadcrumb.php(9.49 KB)
ðŸ“„ class-wc-cache-helper.php(11.17 KB)
ðŸ“„ class-wc-cart-fees.php(3.37 KB)
ðŸ“„ class-wc-cart-session.php(17.81 KB)
ðŸ“„ class-wc-cart-totals.php(28.25 KB)
ðŸ“„ class-wc-cart.php(66.4 KB)
ðŸ“„ class-wc-checkout.php(46.93 KB)
ðŸ“„ class-wc-cli.php(2.57 KB)
ðŸ“„ class-wc-comments.php(15.86 KB)
ðŸ“„ class-wc-countries.php(48.92 KB)
ðŸ“„ class-wc-coupon.php(37.88 KB)
ðŸ“„ class-wc-customer-download-log.php(3.37 KB)
ðŸ“„ class-wc-customer-download.php(10.34 KB)
ðŸ“„ class-wc-customer.php(29.68 KB)
ðŸ“„ class-wc-data-exception.php(1.29 KB)
ðŸ“„ class-wc-data-store.php(6.59 KB)
ðŸ“„ class-wc-datetime.php(2.26 KB)
ðŸ“„ class-wc-deprecated-action-hooks.php(6.59 KB)
ðŸ“„ class-wc-deprecated-filter-hooks.php(7.34 KB)
ðŸ“„ class-wc-discounts.php(35.04 KB)
ðŸ“„ class-wc-download-handler.php(28.38 KB)
ðŸ“„ class-wc-emails.php(25.09 KB)
ðŸ“„ class-wc-embed.php(4.18 KB)
ðŸ“„ class-wc-form-handler.php(44.65 KB)
ðŸ“„ class-wc-frontend-scripts.php(27.03 KB)
ðŸ“„ class-wc-geo-ip.php(30.41 KB)
ðŸ“„ class-wc-geolite-integration.php(1.99 KB)
ðŸ“„ class-wc-geolocation.php(10.44 KB)
ðŸ“„ class-wc-https.php(4.33 KB)
ðŸ“„ class-wc-install.php(100.99 KB)
ðŸ“„ class-wc-integrations.php(1.28 KB)
ðŸ“„ class-wc-log-levels.php(3.9 KB)
ðŸ“„ class-wc-logger.php(9.29 KB)
ðŸ“„ class-wc-meta-data.php(2.21 KB)
ðŸ“„ class-wc-order-factory.php(8.52 KB)
ðŸ“„ class-wc-order-item-coupon.php(4.08 KB)
ðŸ“„ class-wc-order-item-fee.php(8.85 KB)
ðŸ“„ class-wc-order-item-meta.php(5.8 KB)
ðŸ“„ class-wc-order-item-product.php(13.7 KB)
ðŸ“„ class-wc-order-item-shipping.php(7.85 KB)
ðŸ“„ class-wc-order-item-tax.php(6.49 KB)
ðŸ“„ class-wc-order-item.php(11.65 KB)
ðŸ“„ class-wc-order-query.php(2.55 KB)
ðŸ“„ class-wc-order-refund.php(5.63 KB)
ðŸ“„ class-wc-order.php(69.28 KB)
ðŸ“„ class-wc-payment-gateways.php(11.36 KB)
ðŸ“„ class-wc-payment-tokens.php(6.24 KB)
ðŸ“„ class-wc-post-data.php(20.89 KB)
ðŸ“„ class-wc-post-types.php(31.84 KB)
ðŸ“„ class-wc-privacy-background-process.php(1.67 KB)
ðŸ“„ class-wc-privacy-erasers.php(13.61 KB)
ðŸ“„ class-wc-privacy-exporters.php(14.69 KB)
ðŸ“„ class-wc-privacy.php(15.82 KB)
ðŸ“„ class-wc-product-attribute.php(6.97 KB)
ðŸ“„ class-wc-product-download.php(12.25 KB)
ðŸ“„ class-wc-product-external.php(4.84 KB)
ðŸ“„ class-wc-product-factory.php(3.58 KB)
ðŸ“„ class-wc-product-grouped.php(5.22 KB)
ðŸ“„ class-wc-product-query.php(2.18 KB)
ðŸ“„ class-wc-product-simple.php(2.64 KB)
ðŸ“„ class-wc-product-variable.php(22.07 KB)
ðŸ“„ class-wc-product-variation.php(16.87 KB)
ðŸ“„ class-wc-query.php(32.6 KB)
ðŸ“„ class-wc-rate-limiter.php(4 KB)
ðŸ“„ class-wc-regenerate-images-request.php(7.74 KB)
ðŸ“„ class-wc-regenerate-images.php(15.44 KB)
ðŸ“„ class-wc-register-wp-admin-settings.php(5.05 KB)
ðŸ“„ class-wc-rest-authentication.php(21.55 KB)
ðŸ“„ class-wc-rest-exception.php(276 B)
ðŸ“„ class-wc-session-handler.php(15.03 KB)
ðŸ“„ class-wc-shipping-rate.php(5.51 KB)
ðŸ“„ class-wc-shipping-zone.php(13.08 KB)
ðŸ“„ class-wc-shipping-zones.php(4.01 KB)
ðŸ“„ class-wc-shipping.php(11.57 KB)
ðŸ“„ class-wc-shortcodes.php(18.67 KB)
ðŸ“„ class-wc-structured-data.php(18.88 KB)
ðŸ“„ class-wc-tax.php(37.08 KB)
ðŸ“„ class-wc-template-loader.php(21.39 KB)
ðŸ“„ class-wc-tracker.php(37.42 KB)
ðŸ“„ class-wc-validation.php(5.79 KB)
ðŸ“„ class-wc-webhook.php(29.34 KB)
ðŸ“„ class-woocommerce.php(45.52 KB)
ðŸ“ cli
ðŸ“ customizer
ðŸ“ data-stores
ðŸ“ emails
ðŸ“ export
ðŸ“ gateways
ðŸ“ import
ðŸ“ integrations
ðŸ“ interfaces
ðŸ“ legacy
ðŸ“ libraries
ðŸ“ log-handlers
ðŸ“ payment-tokens
ðŸ“ product-usage
ðŸ“ queue
ðŸ“ react-admin
ðŸ“ rest-api
ðŸ“ shipping
ðŸ“ shortcodes
ðŸ“ theme-support
ðŸ“ tracks
ðŸ“ traits
ðŸ“ walkers
ðŸ“„ wc-account-functions.php(13.23 KB)
ðŸ“„ wc-attribute-functions.php(21.12 KB)
ðŸ“„ wc-cart-functions.php(19.9 KB)
ðŸ“„ wc-conditional-functions.php(13.92 KB)
ðŸ“„ wc-core-functions.php(80.68 KB)
ðŸ“„ wc-coupon-functions.php(2.75 KB)
ðŸ“„ wc-deprecated-functions.php(34.08 KB)
ðŸ“„ wc-formatting-functions.php(45.5 KB)
ðŸ“„ wc-notice-functions.php(8.02 KB)
ðŸ“„ wc-order-functions.php(38.93 KB)
ðŸ“„ wc-order-item-functions.php(5.03 KB)
ðŸ“„ wc-page-functions.php(8.3 KB)
ðŸ“„ wc-product-functions.php(53.13 KB)
ðŸ“„ wc-rest-functions.php(12.62 KB)
ðŸ“„ wc-stock-functions.php(16.64 KB)
ðŸ“„ wc-template-functions.php(123.9 KB)
ðŸ“„ wc-template-hooks.php(12.67 KB)
ðŸ“„ wc-term-functions.php(20.66 KB)
ðŸ“„ wc-update-functions.php(86.64 KB)
ðŸ“„ wc-user-functions.php(28.67 KB)
ðŸ“„ wc-webhook-functions.php(5.77 KB)
ðŸ“„ wc-widget-functions.php(2.01 KB)
ðŸ“ wccom-site
ðŸ“ widgets

Editing: class-wc-cache-helper.php

<?php
/**
 * WC_Cache_Helper class.
 *
 * @package WooCommerce\Classes
 */

use Automattic\WooCommerce\Caching\CacheNameSpaceTrait;

defined( 'ABSPATH' ) || exit;

/**
 * WC_Cache_Helper.
 */
class WC_Cache_Helper {
	use CacheNameSpaceTrait;

/**
	 * Transients to delete on shutdown.
	 *
	 * @var array Array of transient keys.
	 */
	private static $delete_transients = array();

/**
	 * Hook in methods.
	 */
	public static function init() {
		add_filter( 'nocache_headers', array( __CLASS__, 'additional_nocache_headers' ), 10 );
		add_action( 'shutdown', array( __CLASS__, 'delete_transients_on_shutdown' ), 10 );
		add_action( 'template_redirect', array( __CLASS__, 'geolocation_ajax_redirect' ) );
		add_action( 'wc_ajax_update_order_review', array( __CLASS__, 'update_geolocation_hash' ), 5 );
		add_action( 'admin_notices', array( __CLASS__, 'notices' ) );
		add_action( 'delete_version_transients', array( __CLASS__, 'delete_version_transients' ), 10 );
		add_action( 'wp', array( __CLASS__, 'prevent_caching' ) );
		add_action( 'clean_term_cache', array( __CLASS__, 'clean_term_cache' ), 10, 2 );
		add_action( 'edit_terms', array( __CLASS__, 'clean_term_cache' ), 10, 2 );
	}

/**
	 * Set additional nocache headers.
	 *
	 * @param array $headers Header names and field values.
	 * @since 3.6.0
	 */
	public static function additional_nocache_headers( $headers ) {
		global $wp_query;

$agent = isset( $_SERVER['HTTP_USER_AGENT'] ) ? wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) : ''; // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

$set_cache = false;

/**
		 * Allow plugins to enable nocache headers. Enabled for Google weblight.
		 *
		 * @param bool $enable_nocache_headers Flag indicating whether to add nocache headers. Default: false.
		 */
		if ( apply_filters( 'woocommerce_enable_nocache_headers', false ) ) {
			$set_cache = true;
		}

/**
		 * Enabled for Google weblight.
		 *
		 * @see https://support.google.com/webmasters/answer/1061943?hl=en
		 */
		if ( false !== strpos( $agent, 'googleweblight' ) ) {
			// no-transform: Opt-out of Google weblight. https://support.google.com/webmasters/answer/6211428?hl=en.
			$set_cache = true;
		}

if ( false !== strpos( $agent, 'Chrome' ) && isset( $wp_query ) && is_cart() ) {
			$set_cache = true;
		}

if ( $set_cache ) {
			$headers['Cache-Control'] = 'no-transform, no-cache, no-store, must-revalidate';
		}
		return $headers;
	}

/**
	 * Add a transient to delete on shutdown.
	 *
	 * @since 3.6.0
	 * @param string|array $keys Transient key or keys.
	 */
	public static function queue_delete_transient( $keys ) {
		self::$delete_transients = array_unique( array_merge( is_array( $keys ) ? $keys : array( $keys ), self::$delete_transients ) );
	}

/**
	 * Transients that don't need to be cleaned right away can be deleted on shutdown to avoid repetition.
	 *
	 * @since 3.6.0
	 */
	public static function delete_transients_on_shutdown() {
		if ( self::$delete_transients ) {
			foreach ( self::$delete_transients as $key ) {
				delete_transient( $key );
			}
			self::$delete_transients = array();
		}
	}

/**
	 * Used to clear layered nav counts based on passed attribute names.
	 *
	 * @since 3.6.0
	 * @param array $attribute_keys Attribute keys.
	 */
	public static function invalidate_attribute_count( $attribute_keys ) {
		if ( $attribute_keys ) {
			foreach ( $attribute_keys as $attribute_key ) {
				self::queue_delete_transient( 'wc_layered_nav_counts_' . $attribute_key );
			}
		}
	}

/**
	 * Get a hash of the customer location.
	 *
	 * @return string
	 */
	public static function geolocation_ajax_get_location_hash() {
		$customer             = new WC_Customer( 0, true );
		$location             = array();
		$location['country']  = $customer->get_billing_country();
		$location['state']    = $customer->get_billing_state();
		$location['postcode'] = $customer->get_billing_postcode();
		$location['city']     = $customer->get_billing_city();
		$location_hash        = substr( md5( strtolower( implode( '', $location ) ) ), 0, 12 );

/**
		 * Controls the location hash used in geolocation-based caching.
		 *
		 * @since 3.6.0
		 *
		 * @param string      $location_hash The hash used for geolocation.
		 * @param array       $location      The location/address data.
		 * @param WC_Customer $customer      The current customer object.
		 */
		return apply_filters( 'woocommerce_geolocation_ajax_get_location_hash', $location_hash, $location, $customer );
	}

/**
	 * Prevent caching on certain pages
	 */
	public static function prevent_caching() {
		if ( ! is_blog_installed() ) {
			return;
		}
		$page_ids = array_filter( array( wc_get_page_id( 'cart' ), wc_get_page_id( 'checkout' ), wc_get_page_id( 'myaccount' ) ) );

if ( is_page( $page_ids ) ) {
			self::set_nocache_constants();
			nocache_headers();
		}
	}

/**
	 * When using geolocation via ajax, to bust cache, redirect if the location hash does not equal the querystring.
	 *
	 * This prevents caching of the wrong data for this request.
	 */
	public static function geolocation_ajax_redirect() {
		if ( 'geolocation_ajax' === get_option( 'woocommerce_default_customer_address' ) && ! is_checkout() && ! is_cart() && ! is_account_page() && ! wp_doing_ajax() && empty( $_POST ) ) { // WPCS: CSRF ok, input var ok.
			$location_hash = self::geolocation_ajax_get_location_hash();
			$current_hash  = isset( $_GET['v'] ) ? wc_clean( wp_unslash( $_GET['v'] ) ) : ''; // WPCS: sanitization ok, input var ok, CSRF ok.
			if ( empty( $current_hash ) || $current_hash !== $location_hash ) {
				global $wp;

$redirect_url = trailingslashit( home_url( $wp->request ) );

if ( ! empty( $_SERVER['QUERY_STRING'] ) ) { // WPCS: Input var ok.
					$redirect_url = add_query_arg( wp_unslash( $_SERVER['QUERY_STRING'] ), '', $redirect_url ); // WPCS: sanitization ok, Input var ok.
				}

if ( ! get_option( 'permalink_structure' ) ) {
					$redirect_url = add_query_arg( $wp->query_string, '', $redirect_url );
				}

$redirect_url = add_query_arg( 'v', $location_hash, remove_query_arg( array( 'v', 'add-to-cart' ), $redirect_url ) );
				wp_safe_redirect( esc_url_raw( $redirect_url ), 307 );
				exit;
			}
		}
	}

/**
	 * Updates the `woocommerce_geo_hash` cookie, which is used to help ensure we display
	 * the correct pricing etc to customers, according to their billing country.
	 *
	 * Note that:
	 *
	 * A) This only sets the cookie if the default customer address is set to "Geolocate (with
	 *    Page Caching Support)".
	 *
	 * B) It is hooked into the `wc_ajax_update_order_review` action, which has the benefit of
	 *    ensuring we update the cookie any time the billing country is changed.
	 */
	public static function update_geolocation_hash() {
		if ( 'geolocation_ajax' === get_option( 'woocommerce_default_customer_address' ) ) {
			wc_setcookie( 'woocommerce_geo_hash', static::geolocation_ajax_get_location_hash(), time() + HOUR_IN_SECONDS );
		}
	}

/**
	 * Get transient version.
	 *
	 * When using transients with unpredictable names, e.g. those containing an md5
	 * hash in the name, we need a way to invalidate them all at once.
	 *
	 * When using default WP transients we're able to do this with a DB query to
	 * delete transients manually.
	 *
	 * With external cache however, this isn't possible. Instead, this function is used
	 * to append a unique string (based on time()) to each transient. When transients
	 * are invalidated, the transient version will increment and data will be regenerated.
	 *
	 * Raised in issue https://github.com/woocommerce/woocommerce/issues/5777.
	 * Adapted from ideas in http://tollmanz.com/invalidation-schemes/.
	 *
	 * @param  string  $group   Name for the group of transients we need to invalidate.
	 * @param  boolean $refresh true to force a new version.
	 * @return string transient version based on time(), 10 digits.
	 */
	public static function get_transient_version( $group, $refresh = false ) {
		$transient_name  = $group . '-transient-version';
		$transient_value = get_transient( $transient_name );

if ( false === $transient_value || true === $refresh ) {
			$transient_value = (string) time();

set_transient( $transient_name, $transient_value );
		}

return $transient_value;
	}

/**
	 * Set constants to prevent caching by some plugins.
	 *
	 * @param  mixed $return Value to return. Previously hooked into a filter.
	 * @return mixed
	 */
	public static function set_nocache_constants( $return = true ) {
		wc_maybe_define_constant( 'DONOTCACHEPAGE', true );
		wc_maybe_define_constant( 'DONOTCACHEOBJECT', true );
		wc_maybe_define_constant( 'DONOTCACHEDB', true );
		return $return;
	}

/**
	 * Notices function.
	 */
	public static function notices() {
		if ( ! function_exists( 'w3tc_pgcache_flush' ) || ! function_exists( 'w3_instance' ) ) {
			return;
		}

$config   = w3_instance( 'W3_Config' );
		$enabled  = $config->get_integer( 'dbcache.enabled' );
		$settings = array_map( 'trim', $config->get_array( 'dbcache.reject.sql' ) );

if ( $enabled && ! in_array( '_wc_session_', $settings, true ) ) {
			?>
			<div class="error">
				<p>
				<?php
				/* translators: 1: key 2: URL */
				echo wp_kses_post( sprintf( __( 'In order for <strong>database caching</strong> to work with WooCommerce you must add %1$s to the "Ignored Query Strings" option in <a href="%2$s">W3 Total Cache settings</a>.', 'woocommerce' ), '<code>_wc_session_</code>', esc_url( admin_url( 'admin.php?page=w3tc_dbcache' ) ) ) );
				?>
				</p>
			</div>
			<?php
		}
	}

/**
	 * Clean term caches added by WooCommerce.
	 *
	 * @since 3.3.4
	 * @param array|int $ids Array of ids or single ID to clear cache for.
	 * @param string    $taxonomy Taxonomy name.
	 */
	public static function clean_term_cache( $ids, $taxonomy ) {
		if ( 'product_cat' === $taxonomy ) {
			$ids = is_array( $ids ) ? $ids : array( $ids );

$clear_ids = array( 0 );

foreach ( $ids as $id ) {
				$clear_ids[] = $id;
				$clear_ids   = array_merge( $clear_ids, get_ancestors( $id, 'product_cat', 'taxonomy' ) );
			}

$clear_ids = array_unique( $clear_ids );

foreach ( $clear_ids as $id ) {
				wp_cache_delete( 'product-category-hierarchy-' . $id, 'product_cat' );
			}
		}
	}

/**
	 * When the transient version increases, this is used to remove all past transients to avoid filling the DB.
	 *
	 * Note; this only works on transients appended with the transient version, and when object caching is not being used.
	 *
	 * @deprecated 3.6.0 Adjusted transient usage to include versions within the transient values, making this cleanup obsolete.
	 * @since  2.3.10
	 * @param string $version Version of the transient to remove.
	 */
	public static function delete_version_transients( $version = '' ) {
		if ( ! wp_using_ext_object_cache() && ! empty( $version ) ) {
			global $wpdb;

$limit = apply_filters( 'woocommerce_delete_version_transients_limit', 1000 );

if ( ! $limit ) {
				return;
			}

$affected = $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->options} WHERE option_name LIKE %s LIMIT %d;", '\_transient\_%' . $version, $limit ) ); // WPCS: cache ok, db call ok.

// If affected rows is equal to limit, there are more rows to delete. Delete in 30 secs.
			if ( $affected === $limit ) {
				wp_schedule_single_event( time() + 30, 'delete_version_transients', array( $version ) );
			}
		}
	}
}

WC_Cache_Helper::init();

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Editing: class-wc-cache-helper.php

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