/** * WooCommerce Customer Functions * * Functions for customers. * * @package WooCommerce\Functions * @version 2.2.0 */ use Automattic\WooCommerce\Enums\OrderInternalStatus; use Automattic\WooCommerce\Internal\DataStores\Orders\OrdersTableDataStore; use Automattic\WooCommerce\Internal\Utilities\Users; use Automattic\WooCommerce\Utilities\OrderUtil; defined( 'ABSPATH' ) || exit; /** * Prevent any user who cannot 'edit_posts' (subscribers, customers etc) from seeing the admin bar. * * Note: get_option( 'woocommerce_lock_down_admin', true ) is a deprecated option here for backwards compatibility. Defaults to true. * * @param bool $show_admin_bar If should display admin bar. * @return bool */ function wc_disable_admin_bar( $show_admin_bar ) { /** * Controls whether the WooCommerce admin bar should be disabled. * * @since 3.0.0 * * @param bool $enabled */ if ( apply_filters( 'woocommerce_disable_admin_bar', true ) && ! ( current_user_can( 'edit_posts' ) || current_user_can( 'manage_woocommerce' ) ) ) { $show_admin_bar = false; } return $show_admin_bar; } add_filter( 'show_admin_bar', 'wc_disable_admin_bar', 10, 1 ); // phpcs:ignore WordPress.VIP.AdminBarRemoval.RemovalDetected if ( ! function_exists( 'wc_create_new_customer' ) ) { /** * Create a new customer. * * @since 9.4.0 Moved woocommerce_registration_error_email_exists filter to the shortcode checkout class. * @since 9.4.0 Removed handling for generating username/password based on settings--this is consumed at form level. Here, if data is missing it will be generated. * * @param string $email Customer email. * @param string $username Customer username. * @param string $password Customer password. * @param array $args List of arguments to pass to `wp_insert_user()`. * @return int|WP_Error Returns WP_Error on failure, Int (user ID) on success. */ function wc_create_new_customer( $email, $username = '', $password = '', $args = array() ) { if ( empty( $email ) || ! is_email( $email ) ) { return new WP_Error( 'registration-error-invalid-email', __( 'Please provide a valid email address.', 'woocommerce' ) ); } if ( email_exists( $email ) ) { return new WP_Error( 'registration-error-email-exists', sprintf( // Translators: %s Email address. esc_html__( 'An account is already registered with %s. Please log in or use a different email address.', 'woocommerce' ), esc_html( $email ) ) ); } if ( empty( $username ) ) { $username = wc_create_new_customer_username( $email, $args ); } $username = sanitize_user( $username ); if ( empty( $username ) || ! validate_username( $username ) ) { return new WP_Error( 'registration-error-invalid-username', __( 'Please provide a valid account username.', 'woocommerce' ) ); } if ( username_exists( $username ) ) { return new WP_Error( 'registration-error-username-exists', __( 'An account is already registered with that username. Please choose another.', 'woocommerce' ) ); } // Handle password creation. $password_generated = false; if ( empty( $password ) ) { $password = wp_generate_password(); $password_generated = true; } if ( empty( $password ) ) { return new WP_Error( 'registration-error-missing-password', __( 'Please create a password for your account.', 'woocommerce' ) ); } // Use WP_Error to handle registration errors. $errors = new WP_Error(); /** * Fires before a customer account is registered. * * This hook fires before customer accounts are created and passes the form data (username, email) and an array * of errors. * * This could be used to add extra validation logic and append errors to the array. * * @since 7.2.0 * * @internal Matches filter name in WooCommerce core. * * @param string $username Customer username. * @param string $user_email Customer email address. * @param \WP_Error $errors Error object. */ do_action( 'woocommerce_register_post', $username, $email, $errors ); /** * Filters registration errors before a customer account is registered. * * This hook filters registration errors. This can be used to manipulate the array of errors before * they are displayed. * * @since 7.2.0 * * @internal Matches filter name in WooCommerce core. * * @param \WP_Error $errors Error object. * @param string $username Customer username. * @param string $user_email Customer email address. * @return \WP_Error */ $errors = apply_filters( 'woocommerce_registration_errors', $errors, $username, $email ); if ( is_wp_error( $errors ) && $errors->get_error_code() ) { return $errors; } // Merged passed args with sanitized username, email, and password. $customer_data = array_merge( $args, array( 'user_login' => $username, 'user_pass' => $password, 'user_email' => $email, 'role' => 'customer', ) ); /** * Filters customer data before a customer account is registered. * * This hook filters customer data. It allows user data to be changed, for example, username, password, email, * first name, last name, and role. * * @since 7.2.0 * * @param array $customer_data An array of customer (user) data. * @return array */ $new_customer_data = apply_filters( 'woocommerce_new_customer_data', wp_parse_args( $customer_data, array( 'first_name' => '', 'last_name' => '', 'source' => 'unknown', ) ) ); $customer_id = wp_insert_user( $new_customer_data ); if ( is_wp_error( $customer_id ) ) { return $customer_id; } // Set account flag to remind customer to update generated password. if ( $password_generated ) { update_user_option( $customer_id, 'default_password_nag', true, true ); } /** * Fires after a customer account has been registered. * * This hook fires after customer accounts are created and passes the customer data. * * @since 7.2.0 * * @internal Matches filter name in WooCommerce core. * * @param integer $customer_id New customer (user) ID. * @param array $new_customer_data Array of customer (user) data. * @param string $password_generated The generated password for the account. */ do_action( 'woocommerce_created_customer', $customer_id, $new_customer_data, $password_generated ); return $customer_id; } } /** * Create a unique username for a new customer. * * @since 3.6.0 * @param string $email New customer email address. * @param array $new_user_args Array of new user args, maybe including first and last names. * @param string $suffix Append string to username to make it unique. * @return string Generated username. */ function wc_create_new_customer_username( $email, $new_user_args = array(), $suffix = '' ) { $username_parts = array(); if ( isset( $new_user_args['first_name'] ) ) { $username_parts[] = sanitize_user( $new_user_args['first_name'], true ); } if ( isset( $new_user_args['last_name'] ) ) { $username_parts[] = sanitize_user( $new_user_args['last_name'], true ); } // Remove empty parts. $username_parts = array_filter( $username_parts ); // If there are no parts, e.g. name had unicode chars, or was not provided, fallback to email. if ( empty( $username_parts ) ) { $email_parts = explode( '@', $email ); $email_username = $email_parts[0]; // Exclude common prefixes. if ( in_array( $email_username, array( 'sales', 'hello', 'mail', 'contact', 'info', ), true ) ) { // Get the domain part. $email_username = $email_parts[1]; } $username_parts[] = sanitize_user( $email_username, true ); } $username = wc_strtolower( implode( '.', $username_parts ) ); if ( $suffix ) { $username .= $suffix; } /** * WordPress 4.4 - filters the list of blocked usernames. * * @since 3.7.0 * @param array $usernames Array of blocked usernames. */ $illegal_logins = (array) apply_filters( 'illegal_user_logins', array() ); // Stop illegal logins and generate a new random username. if ( in_array( strtolower( $username ), array_map( 'strtolower', $illegal_logins ), true ) ) { $new_args = array(); /** * Filter generated customer username. * * @since 3.7.0 * @param string $username Generated username. * @param string $email New customer email address. * @param array $new_user_args Array of new user args, maybe including first and last names. * @param string $suffix Append string to username to make it unique. */ $new_args['first_name'] = apply_filters( 'woocommerce_generated_customer_username', 'woo_user_' . zeroise( wp_rand( 0, 9999 ), 4 ), $email, $new_user_args, $suffix ); return wc_create_new_customer_username( $email, $new_args, $suffix ); } if ( username_exists( $username ) ) { // Generate something unique to append to the username in case of a conflict with another user. $suffix = '-' . zeroise( wp_rand( 0, 9999 ), 4 ); return wc_create_new_customer_username( $email, $new_user_args, $suffix ); } /** * Filter new customer username. * * @since 3.7.0 * @param string $username Customer username. * @param string $email New customer email address. * @param array $new_user_args Array of new user args, maybe including first and last names. * @param string $suffix Append string to username to make it unique. */ return apply_filters( 'woocommerce_new_customer_username', $username, $email, $new_user_args, $suffix ); } /** * Login a customer (set auth cookie and set global user object). * * @param int $customer_id Customer ID. */ function wc_set_customer_auth_cookie( $customer_id ) { wp_set_current_user( $customer_id ); wp_set_auth_cookie( $customer_id, true ); // Update session. if ( is_callable( array( WC()->session, 'init_session_cookie' ) ) ) { WC()->session->init_session_cookie(); } } /** * Get past orders (by email) and update them. * * @param int $customer_id Customer ID. * @return int */ function wc_update_new_customer_past_orders( $customer_id ) { $linked = 0; $complete = 0; $customer = get_user_by( 'id', absint( $customer_id ) ); $customer_orders = wc_get_orders( array( 'limit' => -1, 'customer' => array( array( 0, $customer->user_email ) ), 'return' => 'ids', ) ); if ( ! empty( $customer_orders ) ) { foreach ( $customer_orders as $order_id ) { $order = wc_get_order( $order_id ); if ( ! $order ) { continue; } $order->set_customer_id( $customer->ID ); $order->save(); if ( $order->has_downloadable_item() ) { $data_store = WC_Data_Store::load( 'customer-download' ); $data_store->delete_by_order_id( $order->get_id() ); wc_downloadable_product_permissions( $order->get_id(), true ); } do_action( 'woocommerce_update_new_customer_past_order', $order_id, $customer ); if ( $order->get_status() === OrderInternalStatus::COMPLETED ) { ++$complete; } ++$linked; } } if ( $complete ) { update_user_meta( $customer_id, 'paying_customer', 1 ); Users::update_site_user_meta( $customer_id, 'wc_order_count', '' ); Users::update_site_user_meta( $customer_id, 'wc_money_spent', '' ); Users::delete_site_user_meta( $customer_id, 'wc_last_order' ); } return $linked; } /** * Order payment completed - This is a paying customer. * * @param int $order_id Order ID. */ function wc_paying_customer( $order_id ) { $order = wc_get_order( $order_id ); $customer_id = $order->get_customer_id(); if ( $customer_id > 0 && 'shop_order_refund' !== $order->get_type() ) { $customer = new WC_Customer( $customer_id ); if ( ! $customer->get_is_paying_customer() ) { $customer->set_is_paying_customer( true ); $customer->save(); } } } add_action( 'woocommerce_payment_complete', 'wc_paying_customer' ); add_action( 'woocommerce_order_status_completed', 'wc_paying_customer' ); /** * Checks if a user (by email or ID or both) has bought an item. * * @param string $customer_email Customer email to check. * @param int $user_id User ID to check. * @param int $product_id Product ID to check. * @return bool */ function wc_customer_bought_product( $customer_email, $user_id, $product_id ) { global $wpdb; $result = apply_filters( 'woocommerce_pre_customer_bought_product', null, $customer_email, $user_id, $product_id ); if ( null !== $result ) { return $result; } /** * Whether to use lookup tables - it can optimize performance, but correctness depends on the frequency of the AS job. * * @since 9.7.0 * * @param bool $enabled * @param string $customer_email Customer email to check. * @param int $user_id User ID to check. * @param int $product_id Product ID to check. * @return bool */ $use_lookup_tables = apply_filters( 'woocommerce_customer_bought_product_use_lookup_tables', false, $customer_email, $user_id, $product_id ); if ( $use_lookup_tables ) { // Lookup tables get refreshed along with the `woocommerce_reports` transient version (due to async processing). // With high orders placement rate, this caching here will be short-lived (suboptimal for BFCM/Christmas and busy stores in general). $cache_version = WC_Cache_Helper::get_transient_version( 'woocommerce_reports' ); } elseif ( '' === $customer_email && $user_id ) { // Optimized: for specific customers version with orders count (it's a user meta from in-memory populated datasets). // Best-case scenario for caching here, as it only depends on the customer orders placement rate. $cache_version = wc_get_customer_order_count( $user_id ); } else { // Fallback: create, update, and delete operations on orders clears caches and refreshes `orders` transient version. // With high orders placement rate, this caching here will be short-lived (suboptimal for BFCM/Christmas and busy stores in general). // For the core, no use-cases for this branch. Themes/extensions are still valid use-cases. $cache_version = WC_Cache_Helper::get_transient_version( 'orders' ); } $cache_group = 'orders'; $cache_key = 'wc_customer_bought_product_' . md5( $customer_email . '-' . $user_id . '-' . $use_lookup_tables ); $cache_value = wp_cache_get( $cache_key, $cache_group ); if ( isset( $cache_value['value'], $cache_value['version'] ) && $cache_value['version'] === $cache_version ) { $result = $cache_value['value']; } else { $customer_data = array( $user_id ); if ( $user_id ) { $user = get_user_by( 'id', $user_id ); if ( isset( $user->user_email ) ) { $customer_data[] = $user->user_email; } } if ( is_email( $customer_email ) ) { $customer_data[] = $customer_email; } $customer_data = array_map( 'esc_sql', array_filter( array_unique( $customer_data ) ) ); $statuses = array_map( 'esc_sql', wc_get_is_paid_statuses() ); if ( count( $customer_data ) === 0 ) { return false; } if ( OrderUtil::custom_orders_table_usage_is_enabled() ) { $statuses = array_map( function ( $status ) { return "wc-$status"; }, $statuses ); $order_table = OrdersTableDataStore::get_orders_table_name(); $user_id_clause = ''; if ( $user_id ) { $user_id_clause = 'OR o.customer_id = ' . absint( $user_id ); } if ( $use_lookup_tables ) { // HPOS: yes, Lookup table: yes. $sql = " SELECT DISTINCT product_or_variation_id FROM ( SELECT CASE WHEN product_id != 0 THEN product_id ELSE variation_id END AS product_or_variation_id FROM {$wpdb->prefix}wc_order_product_lookup lookup INNER JOIN $order_table AS o ON lookup.order_id = o.ID WHERE o.status IN ('" . implode( "','", $statuses ) . "') AND ( o.billing_email IN ('" . implode( "','", $customer_data ) . "') $user_id_clause ) ) AS subquery WHERE product_or_variation_id != 0 "; } else { // HPOS: yes, Lookup table: no. $sql = " SELECT DISTINCT im.meta_value FROM $order_table AS o INNER JOIN {$wpdb->prefix}woocommerce_order_items AS i ON o.id = i.order_id INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS im ON i.order_item_id = im.order_item_id WHERE o.status IN ('" . implode( "','", $statuses ) . "') AND im.meta_key IN ('_product_id', '_variation_id' ) AND im.meta_value != 0 AND ( o.billing_email IN ('" . implode( "','", $customer_data ) . "') $user_id_clause ) "; } $result = $wpdb->get_col( $sql ); } elseif ( $use_lookup_tables ) { // HPOS: no, Lookup table: yes. $result = $wpdb->get_col( " SELECT DISTINCT product_or_variation_id FROM ( SELECT CASE WHEN lookup.product_id != 0 THEN lookup.product_id ELSE lookup.variation_id END AS product_or_variation_id FROM {$wpdb->prefix}wc_order_product_lookup AS lookup INNER JOIN {$wpdb->posts} AS p ON p.ID = lookup.order_id INNER JOIN {$wpdb->postmeta} AS pm ON p.ID = pm.post_id WHERE p.post_status IN ( 'wc-" . implode( "','wc-", $statuses ) . "' ) AND pm.meta_key IN ( '_billing_email', '_customer_user' ) AND pm.meta_value IN ( '" . implode( "','", $customer_data ) . "' ) ) AS subquery WHERE product_or_variation_id != 0 " ); // WPCS: unprepared SQL ok. } else { // HPOS: no, Lookup table: no. // phpcs:disable WordPress.DB.PreparedSQL.NotPrepared $result = $wpdb->get_col( " SELECT DISTINCT im.meta_value FROM {$wpdb->posts} AS p INNER JOIN {$wpdb->postmeta} AS pm ON p.ID = pm.post_id INNER JOIN {$wpdb->prefix}woocommerce_order_items AS i ON p.ID = i.order_id INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS im ON i.order_item_id = im.order_item_id WHERE p.post_status IN ( 'wc-" . implode( "','wc-", $statuses ) . "' ) AND p.post_type = 'shop_order' AND pm.meta_key IN ( '_billing_email', '_customer_user' ) AND im.meta_key IN ( '_product_id', '_variation_id' ) AND im.meta_value != 0 AND pm.meta_value IN ( '" . implode( "','", $customer_data ) . "' ) " ); // phpcs:enable WordPress.DB.PreparedSQL.NotPrepared } $result = array_map( 'absint', $result ); wp_cache_set( $cache_key, array( 'version' => $cache_version, 'value' => $result, ), $cache_group, MONTH_IN_SECONDS ); } return in_array( absint( $product_id ), $result, true ); } /** * Checks if the current user has a role. * * @param string $role The role. * @return bool */ function wc_current_user_has_role( $role ) { return wc_user_has_role( wp_get_current_user(), $role ); } /** * Checks if a user has a role. * * @param int|\WP_User $user The user. * @param string $role The role. * @return bool */ function wc_user_has_role( $user, $role ) { if ( ! is_object( $user ) ) { $user = get_userdata( $user ); } if ( ! $user || ! $user->exists() ) { return false; } return in_array( $role, $user->roles, true ); } /** * Checks if a user has a certain capability. * * @param array $allcaps All capabilities. * @param array $caps Capabilities. * @param array $args Arguments. * * @return array The filtered array of all capabilities. */ function wc_customer_has_capability( $allcaps, $caps, $args ) { if ( isset( $caps[0] ) ) { switch ( $caps[0] ) { case 'view_order': $user_id = intval( $args[1] ); $order = wc_get_order( $args[2] ); if ( $order && $user_id === $order->get_user_id() ) { $allcaps['view_order'] = true; } break; case 'pay_for_order': $user_id = intval( $args[1] ); $order_id = isset( $args[2] ) ? $args[2] : null; // When no order ID, we assume it's a new order // and thus, customer can pay for it. if ( ! $order_id ) { $allcaps['pay_for_order'] = true; break; } $order = wc_get_order( $order_id ); if ( $order && ( $user_id === $order->get_user_id() || ! $order->get_user_id() ) ) { $allcaps['pay_for_order'] = true; } break; case 'order_again': $user_id = intval( $args[1] ); $order = wc_get_order( $args[2] ); if ( $order && $user_id === $order->get_user_id() ) { $allcaps['order_again'] = true; } break; case 'cancel_order': $user_id = intval( $args[1] ); $order = wc_get_order( $args[2] ); if ( $order && $user_id === $order->get_user_id() ) { $allcaps['cancel_order'] = true; } break; case 'download_file': $user_id = intval( $args[1] ); $download = $args[2]; if ( $download && $user_id === $download->get_user_id() ) { $allcaps['download_file'] = true; } break; } } return $allcaps; } add_filter( 'user_has_cap', 'wc_customer_has_capability', 10, 3 ); /** * Safe way of allowing shop managers restricted capabilities that will remove * access to the capabilities if WooCommerce is deactivated. * * @since 3.5.4 * @param bool[] $allcaps Array of key/value pairs where keys represent a capability name and boolean values * represent whether the user has that capability. * @param string[] $caps Required primitive capabilities for the requested capability. * @param array $args Arguments that accompany the requested capability check. * @param WP_User $user The user object. * @return bool[] */ function wc_shop_manager_has_capability( $allcaps, $caps, $args, $user ) { if ( wc_user_has_role( $user, 'shop_manager' ) ) { // @see wc_modify_map_meta_cap, which limits editing to customers. $allcaps['edit_users'] = true; } return $allcaps; } add_filter( 'user_has_cap', 'wc_shop_manager_has_capability', 10, 4 ); /** * Modify the list of editable roles to prevent non-admin adding admin users. * * @param array $roles Roles. * @return array */ function wc_modify_editable_roles( $roles ) { if ( is_multisite() && is_super_admin() ) { return $roles; } if ( ! wc_current_user_has_role( 'administrator' ) ) { unset( $roles['administrator'] ); if ( wc_current_user_has_role( 'shop_manager' ) ) { $shop_manager_editable_roles = apply_filters( 'woocommerce_shop_manager_editable_roles', array( 'customer' ) ); return array_intersect_key( $roles, array_flip( $shop_manager_editable_roles ) ); } } return $roles; } add_filter( 'editable_roles', 'wc_modify_editable_roles' ); /** * Modify capabilities to prevent non-admin users editing admin users. * * $args[0] will be the user being edited in this case. * * @param array $caps Array of caps. * @param string $cap Name of the cap we are checking. * @param int $user_id ID of the user being checked against. * @param array $args Arguments. * @return array */ function wc_modify_map_meta_cap( $caps, $cap, $user_id, $args ) { if ( is_multisite() && is_super_admin() ) { return $caps; } switch ( $cap ) { case 'edit_user': case 'remove_user': case 'promote_user': case 'delete_user': if ( ! isset( $args[0] ) || $args[0] === $user_id ) { break; } elseif ( ! wc_current_user_has_role( 'administrator' ) ) { if ( wc_user_has_role( $args[0], 'administrator' ) ) { $caps[] = 'do_not_allow'; } elseif ( wc_current_user_has_role( 'shop_manager' ) ) { // Shop managers can only edit customer info. $userdata = get_userdata( $args[0] ); $shop_manager_editable_roles = apply_filters( 'woocommerce_shop_manager_editable_roles', array( 'customer' ) ); // phpcs:ignore WooCommerce.Commenting.CommentHooks.MissingHookComment if ( property_exists( $userdata, 'roles' ) && ! empty( $userdata->roles ) && ! array_intersect( $userdata->roles, $shop_manager_editable_roles ) ) { $caps[] = 'do_not_allow'; } } } break; } return $caps; } add_filter( 'map_meta_cap', 'wc_modify_map_meta_cap', 10, 4 ); /** * Get customer download permissions from the database. * * @param int $customer_id Customer/User ID. * @return array */ function wc_get_customer_download_permissions( $customer_id ) { $data_store = WC_Data_Store::load( 'customer-download' ); return apply_filters( 'woocommerce_permission_list', $data_store->get_downloads_for_customer( $customer_id ), $customer_id ); // phpcs:ignore WooCommerce.Commenting.CommentHooks.MissingHookComment } /** * Get customer available downloads. * * @param int $customer_id Customer/User ID. * @return array */ function wc_get_customer_available_downloads( $customer_id ) { $downloads = array(); $_product = null; $order = null; $file_number = 0; // Get results from valid orders only. $results = wc_get_customer_download_permissions( $customer_id ); if ( $results ) { foreach ( $results as $result ) { $order_id = intval( $result->order_id ); if ( ! $order || $order->get_id() !== $order_id ) { // New order. $order = wc_get_order( $order_id ); $_product = null; } // Make sure the order exists for this download. if ( ! $order ) { continue; } // Check if downloads are permitted. if ( ! $order->is_download_permitted() ) { continue; } $product_id = intval( $result->product_id ); if ( ! $_product || $_product->get_id() !== $product_id ) { // New product. $file_number = 0; $_product = wc_get_product( $product_id ); } // Check product exists and has the file. if ( ! $_product || ! $_product->exists() || ! $_product->has_file( $result->download_id ) ) { continue; } $download_file = $_product->get_file( $result->download_id ); // If the downloadable file has been disabled (it may be located in an untrusted location) then do not return it. if ( ! $download_file->get_enabled() ) { continue; } // Download name will be 'Product Name' for products with a single downloadable file, and 'Product Name - File X' for products with multiple files. // phpcs:ignore WooCommerce.Commenting.CommentHooks.MissingHookComment $download_name = apply_filters( 'woocommerce_downloadable_product_name', $download_file['name'], $_product, $result->download_id, $file_number ); $downloads[] = array( 'download_url' => add_query_arg( array( 'download_file' => $product_id, 'order' => $result->order_key, 'email' => rawurlencode( $result->user_email ), 'key' => $result->download_id, ), home_url( '/' ) ), 'download_id' => $result->download_id, 'product_id' => $_product->get_id(), 'product_name' => $_product->get_name(), 'product_url' => $_product->is_visible() ? $_product->get_permalink() : '', // Since 3.3.0. 'download_name' => $download_name, 'order_id' => $order->get_id(), 'order_key' => $order->get_order_key(), 'downloads_remaining' => $result->downloads_remaining, 'access_expires' => $result->access_expires, 'file' => array( 'name' => $download_file->get_name(), 'file' => $download_file->get_file(), ), ); ++$file_number; } } // phpcs:ignore WooCommerce.Commenting.CommentHooks.MissingHookComment return apply_filters( 'woocommerce_customer_available_downloads', $downloads, $customer_id ); } /** * Get total spent by customer. * * @param int $user_id User ID. * @return string */ function wc_get_customer_total_spent( $user_id ) { $customer = new WC_Customer( $user_id ); return $customer->get_total_spent(); } /** * Get total orders by customer. * * @param int $user_id User ID. * @return int */ function wc_get_customer_order_count( $user_id ) { $customer = new WC_Customer( $user_id ); return $customer->get_order_count(); } /** * Reset _customer_user on orders when a user is deleted. * * @param int $user_id User ID. */ function wc_reset_order_customer_id_on_deleted_user( $user_id ) { global $wpdb; if ( OrderUtil::custom_orders_table_usage_is_enabled() ) { $order_table_ds = wc_get_container()->get( OrdersTableDataStore::class ); $order_table = $order_table_ds::get_orders_table_name(); $wpdb->update( $order_table, array( 'customer_id' => 0, 'date_updated_gmt' => current_time( 'mysql', true ), ), array( 'customer_id' => $user_id, ), array( '%d', '%s', ), array( '%d', ) ); } if ( ! OrderUtil::custom_orders_table_usage_is_enabled() || OrderUtil::is_custom_order_tables_in_sync() ) { $wpdb->update( $wpdb->postmeta, array( 'meta_value' => 0, //phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_value ), array( 'meta_key' => '_customer_user', //phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key 'meta_value' => $user_id, //phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_value ) ); } } add_action( 'deleted_user', 'wc_reset_order_customer_id_on_deleted_user' ); /** * Get review verification status. * * @param int $comment_id Comment ID. * @return bool */ function wc_review_is_from_verified_owner( $comment_id ) { $verified = get_comment_meta( $comment_id, 'verified', true ); return '' === $verified ? WC_Comments::add_comment_purchase_verification( $comment_id ) : (bool) $verified; } /** * Disable author archives for customers. * * @since 2.5.0 */ function wc_disable_author_archives_for_customers() { global $author; if ( is_author() ) { $user = get_user_by( 'id', $author ); if ( user_can( $user, 'customer' ) && ! user_can( $user, 'edit_posts' ) ) { wp_safe_redirect( wc_get_page_permalink( 'shop' ) ); exit; } } } add_action( 'template_redirect', 'wc_disable_author_archives_for_customers' ); /** * Hooks into the `profile_update` hook to set the user last updated timestamp. * * @since 2.6.0 * @param int $user_id The user that was updated. * @param array $old The profile fields pre-change. */ function wc_update_profile_last_update_time( $user_id, $old ) { wc_set_user_last_update_time( $user_id ); } add_action( 'profile_update', 'wc_update_profile_last_update_time', 10, 2 ); /** * Hooks into the update user meta function to set the user last updated timestamp. * * @since 2.6.0 * @param int $meta_id ID of the meta object that was changed. * @param int $user_id The user that was updated. * @param string $meta_key Name of the meta key that was changed. * @param mixed $_meta_value Value of the meta that was changed. */ function wc_meta_update_last_update_time( $meta_id, $user_id, $meta_key, $_meta_value ) { $keys_to_track = apply_filters( 'woocommerce_user_last_update_fields', array( 'first_name', 'last_name' ) ); // phpcs:ignore WooCommerce.Commenting.CommentHooks.MissingHookComment $update_time = in_array( $meta_key, $keys_to_track, true ) ? true : false; $update_time = 'billing_' === substr( $meta_key, 0, 8 ) ? true : $update_time; $update_time = 'shipping_' === substr( $meta_key, 0, 9 ) ? true : $update_time; if ( $update_time ) { wc_set_user_last_update_time( $user_id ); } } add_action( 'update_user_meta', 'wc_meta_update_last_update_time', 10, 4 ); /** * Sets a user's "last update" time to the current timestamp. * * @since 2.6.0 * @param int $user_id The user to set a timestamp for. */ function wc_set_user_last_update_time( $user_id ) { update_user_meta( $user_id, 'last_update', gmdate( 'U' ) ); } /** * Get customer saved payment methods list. * * @since 2.6.0 * @param int $customer_id Customer ID. * @return array */ function wc_get_customer_saved_methods_list( $customer_id ) { return apply_filters( 'woocommerce_saved_payment_methods_list', array(), $customer_id ); // phpcs:ignore WooCommerce.Commenting.CommentHooks.MissingHookComment } /** * Get info about customer's last order. * * @since 2.6.0 * @param int $customer_id Customer ID. * @return WC_Order|bool Order object if successful or false. */ function wc_get_customer_last_order( $customer_id ) { $customer = new WC_Customer( $customer_id ); return $customer->get_last_order(); } /** * When a user is deleted in WordPress, delete corresponding WooCommerce data. * * @param int $user_id User ID being deleted. */ function wc_delete_user_data( $user_id ) { global $wpdb; // Clean up sessions. $wpdb->delete( $wpdb->prefix . 'woocommerce_sessions', array( 'session_key' => $user_id, ) ); // Revoke API keys. $wpdb->delete( $wpdb->prefix . 'woocommerce_api_keys', array( 'user_id' => $user_id, ) ); // Clean up payment tokens. $payment_tokens = WC_Payment_Tokens::get_customer_tokens( $user_id ); foreach ( $payment_tokens as $payment_token ) { $payment_token->delete(); } } add_action( 'delete_user', 'wc_delete_user_data' ); /** * Store user agents. Used for tracker. * * @since 3.0.0 * @param string $user_login User login. * @param int|object $user User. */ function wc_maybe_store_user_agent( $user_login, $user ) { if ( 'yes' === get_option( 'woocommerce_allow_tracking', 'no' ) && user_can( $user, 'manage_woocommerce' ) ) { $admin_user_agents = array_filter( (array) get_option( 'woocommerce_tracker_ua', array() ) ); $admin_user_agents[] = wc_get_user_agent(); update_option( 'woocommerce_tracker_ua', array_unique( $admin_user_agents ), false ); } } add_action( 'wp_login', 'wc_maybe_store_user_agent', 10, 2 ); /** * Update logic triggered on login. * * @since 3.4.0 * @param string $user_login User login. * @param object $user User. */ function wc_user_logged_in( $user_login, $user ) { wc_update_user_last_active( $user->ID ); update_user_meta( $user->ID, '_woocommerce_load_saved_cart_after_login', 1 ); } add_action( 'wp_login', 'wc_user_logged_in', 10, 2 ); /** * Update when the user was last active. * * @since 3.4.0 */ function wc_current_user_is_active() { if ( ! is_user_logged_in() ) { return; } wc_update_user_last_active( get_current_user_id() ); } add_action( 'wp', 'wc_current_user_is_active', 10 ); /** * Set the user last active timestamp to now. * * @since 3.4.0 * @param int $user_id User ID to mark active. */ function wc_update_user_last_active( $user_id ) { if ( ! $user_id ) { return; } update_user_meta( $user_id, 'wc_last_active', (string) strtotime( gmdate( 'Y-m-d', time() ) ) ); } /** * Translate WC roles using the woocommerce textdomain. * * @since 3.7.0 * @param string $translation Translated text. * @param string $text Text to translate. * @param string $context Context information for the translators. * @param string $domain Text domain. Unique identifier for retrieving translated strings. * @return string */ function wc_translate_user_roles( $translation, $text, $context, $domain ) { // translate_user_role() only accepts a second parameter starting in WP 5.2. if ( version_compare( get_bloginfo( 'version' ), '5.2', '<' ) ) { return $translation; } if ( 'User role' === $context && 'default' === $domain && in_array( $text, array( 'Shop manager', 'Customer' ), true ) ) { return translate_user_role( $text, 'woocommerce' ); } return $translation; } add_filter( 'gettext_with_context', 'wc_translate_user_roles', 10, 4 ); extreme environments innovative solutions by – Barter Up Now – Trade without Money
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  • ahtsham
  • September 13, 2024

extreme environments innovative solutions by

Innovative Solutions Inspired by Extreme Environments

Building upon the foundational understanding of how extreme environments have historically shaped human ingenuity, it is evident that these demanding conditions continue to be a powerful catalyst for groundbreaking innovations. From cutting-edge technologies to sustainable practices, the challenges posed by harsh settings push us to develop solutions that often transcend their initial context, benefiting society at large. To explore how these innovations originate, adapt, and influence various sectors, we delve into specific technological, biological, and social advancements inspired by environments once considered inhospitable.

Table of Contents

Breakthrough Technologies Originating from Extreme Conditions

Many technological innovations we rely on today have roots in solutions designed to withstand or operate in harsh environments. For example, cryogenic engineering for space missions and deep-sea exploration has led to the development of advanced insulation materials and pressurized suits. Similarly, the desalination techniques pioneered in arid regions like the Middle East are now integral to global water management.

Case Study: The design of robotic systems for Arctic exploration has influenced the development of autonomous vehicles and drones used in disaster zones, where extreme cold and unpredictable terrain pose significant challenges.

The role of necessity cannot be overstated; it acts as a catalyst for innovation. In the harshest environments, survival depends on creative problem-solving, which often results in technological advances that benefit multiple industries. The development of high-strength, lightweight composites originally for aerospace applications now finds use in sports equipment and automotive manufacturing, exemplifying cross-sector innovation driven by environmental demands.

Bio-Inspired Innovations: Learning from Nature in Extreme Settings

Extremophile organisms—microbes, plants, and animals thriving in extreme conditions—offer invaluable insights for biomimicry. Their biological adaptations inspire resilient materials and structures. For instance, the laminated shell of the mollusk has influenced the design of impact-resistant helmets and armor.

Materials Development: Researchers harness biological strategies like the self-healing properties of certain fungi and bacteria to create self-repairing materials that extend the lifespan of infrastructure and medical devices.

Applications: In medicine, biomimicry based on extremophile biology has led to the creation of biocompatible implants capable of functioning in the body’s extreme environments. Engineering fields utilize these biological insights to develop resilient, adaptive structures suited for both terrestrial and extraterrestrial habitats.

Sustainable and Eco-Friendly Solutions Derived from Extreme Environments

Extreme environments challenge us to rethink resource management. In polar regions, the harvesting of renewable energy—such as wind and tidal power—has become crucial for remote stations. Similarly, desert ecosystems inspire innovative water collection and purification technologies.

For example, desert rainwater harvesting systems mimic natural condensation processes, capturing moisture from the air. In the Arctic, ice-based energy storage systems utilize permafrost to store thermal energy, offering sustainable alternatives to conventional methods.

These innovations contribute to environmental resilience and conservation efforts, enabling communities to operate sustainably amid climate extremes. They also demonstrate how nature’s adaptations can inform eco-friendly technological development.

Human Adaptation and Wearable Technologies for Extreme Environments

Designing gear for extreme conditions requires integrating safety, durability, and functionality. Innovations include smart textiles embedded with sensors that monitor vital signs in real-time, providing immediate feedback for users in hazardous settings.

Example: Astronaut suits equipped with biometric sensors enhance safety by continuously tracking physiological data, which informs both individual health management and mission planning. Similarly, military personnel operating in extreme environments benefit from climate-adaptive clothing that adjusts to temperature fluctuations.

These wearable technologies not only improve safety but also have broad applications in civilian healthcare, sports, and disaster response, showcasing how environmental challenges inspire human-centered innovation.

The Psychological and Social Innovations Fostered by Living in Extremes

Extreme environments demand strong mental resilience and cohesive communities. Strategies such as virtual reality training simulations prepare individuals for the psychological stresses of isolation and confinement.

Example: Antarctic research stations utilize innovative communication networks and recreational programs to maintain mental health and social cohesion among personnel, which is crucial for mission success.

These approaches inform training protocols for space missions, where psychological well-being becomes as vital as physical safety. The development of educational programs focused on resilience and teamwork in extreme conditions enhances preparedness for future extraterrestrial colonization.

Ethical and Safety Considerations in Developing Extreme Environment-Inspired Solutions

While innovation driven by extreme environments yields significant benefits, it also raises concerns about ecological impacts and safety. For example, deploying geothermal energy systems in sensitive ecosystems must be managed carefully to prevent habitat disruption.

Balancing progress with sustainability involves establishing regulatory frameworks that ensure responsible innovation. Incorporating environmental impact assessments and community engagement is essential to mitigate risks of unintended consequences.

As we develop solutions inspired by extreme environments, maintaining ethical standards safeguards both ecosystems and future human endeavors.

Future Directions: Bridging Extreme Environment Innovations Back to Human Ingenuity

Ongoing research continues to uncover new biological mechanisms and environmental adaptations, deepening our understanding of resilience. Interdisciplinary collaboration among biologists, engineers, and social scientists accelerates the translation of these insights into practical applications.

Potential cross-disciplinary applications include space habitat design, climate change mitigation, and urban resilience. The iterative cycle—where environmental challenges inspire human innovation, which in turn enhances our capacity to adapt—remains a driving force for progress.

By embracing this cyclical relationship, we reinforce the idea that solutions inspired by extreme environments not only solve immediate challenges but also expand the horizons of human ingenuity, ensuring a sustainable future for generations to come.

“Nature’s extreme adaptations continue to be a wellspring of inspiration, pushing the boundaries of human innovation and fostering resilience in our changing world.”

To learn more about how our environment shapes human creativity and technological progress, revisit the foundational insights in How Extreme Environments Shape Human Innovation.

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