<form method="POST">
    <h3>Editing: class-wc-order-item.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
/**
 * Order Item
 *
 * A class which represents an item within an order and handles CRUD.
 * Uses ArrayAccess to be BW compatible with WC_Orders::get_items().
 *
 * @package WooCommerce\Classes
 * @version 3.0.0
 * @since   3.0.0
 */

defined( 'ABSPATH' ) || exit;

/**
 * Order item class.
 */
class WC_Order_Item extends WC_Data implements ArrayAccess {
	/**
	 * Legacy cart item values.
	 *
	 * @deprecated 4.4.0 For legacy actions.
	 * @var array
	 */
	public $legacy_values;

	/**
	 * Legacy cart item keys.
	 *
	 * @deprecated 4.4.0 For legacy actions.
	 * @var string
	 */
	public $legacy_cart_item_key;

	/**
	 * Order Data array. This is the core order data exposed in APIs since 3.0.0.
	 *
	 * @since 3.0.0
	 * @var array
	 */
	protected $data = array(
		'order_id' =&gt; 0,
		'name'     =&gt; '',
	);

	/**
	 * Stores meta in cache for future reads.
	 * A group must be set to to enable caching.
	 *
	 * @var string
	 */
	protected $cache_group = 'order-items';

	/**
	 * Meta type. This should match up with
	 * the types available at https://developer.wordpress.org/reference/functions/add_metadata/.
	 * WP defines 'post', 'user', 'comment', and 'term'.
	 *
	 * @var string
	 */
	protected $meta_type = 'order_item';

	/**
	 * This is the name of this object type.
	 *
	 * @var string
	 */
	protected $object_type = 'order_item';

	/**
	 * Legacy package key.
	 *
	 * @deprecated 4.4.0 For legacy actions.
	 * @var string
	 */
	public $legacy_package_key;

	/**
	 * Constructor.
	 *
	 * @param int|object|array $item ID to load from the DB, or WC_Order_Item object.
	 */
	public function __construct( $item = 0 ) {
		parent::__construct( $item );

		if ( $item instanceof WC_Order_Item ) {
			$this-&gt;set_id( $item-&gt;get_id() );
		} elseif ( is_numeric( $item ) &amp;&amp; $item &gt; 0 ) {
			$this-&gt;set_id( $item );
		} else {
			$this-&gt;set_object_read( true );
		}

		$type             = 'line_item' === $this-&gt;get_type() ? 'product' : $this-&gt;get_type();
		$this-&gt;data_store = WC_Data_Store::load( 'order-item-' . $type );
		if ( $this-&gt;get_id() &gt; 0 ) {
			$this-&gt;data_store-&gt;read( $this );
		}
	}

	/**
	 * Merge changes with data and clear.
	 * Overrides WC_Data::apply_changes.
	 * array_replace_recursive does not work well for order items because it merges taxes instead
	 * of replacing them.
	 *
	 * @since 3.2.0
	 */
	public function apply_changes() {
		if ( function_exists( 'array_replace' ) ) {
			$this-&gt;data = array_replace( $this-&gt;data, $this-&gt;changes ); // phpcs:ignore PHPCompatibility.FunctionUse.NewFunctions.array_replaceFound
		} else { // PHP 5.2 compatibility.
			foreach ( $this-&gt;changes as $key =&gt; $change ) {
				$this-&gt;data[ $key ] = $change;
			}
		}
		$this-&gt;changes = array();
	}

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

	/**
	 * Get order ID this meta belongs to.
	 *
	 * @param  string $context What the value is for. Valid values are 'view' and 'edit'.
	 * @return int
	 */
	public function get_order_id( $context = 'view' ) {
		return $this-&gt;get_prop( 'order_id', $context );
	}

	/**
	 * Get order item name.
	 *
	 * @param  string $context What the value is for. Valid values are 'view' and 'edit'.
	 * @return string
	 */
	public function get_name( $context = 'view' ) {
		return $this-&gt;get_prop( 'name', $context );
	}

	/**
	 * Get order item type. Overridden by child classes.
	 *
	 * @return string
	 */
	public function get_type() {
		return '';
	}

	/**
	 * Get quantity.
	 *
	 * @return int
	 */
	public function get_quantity() {
		return 1;
	}

	/**
	 * Get tax status.
	 *
	 * @return string
	 */
	public function get_tax_status() {
		return 'taxable';
	}

	/**
	 * Get tax class.
	 *
	 * @return string
	 */
	public function get_tax_class() {
		return '';
	}

	/**
	 * Get parent order object.
	 *
	 * @return WC_Order
	 */
	public function get_order() {
		return wc_get_order( $this-&gt;get_order_id() );
	}

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

	/**
	 * Set order ID.
	 *
	 * @param int $value Order ID.
	 */
	public function set_order_id( $value ) {
		$this-&gt;set_prop( 'order_id', absint( $value ) );
	}

	/**
	 * Set order item name.
	 *
	 * @param string $value Item name.
	 */
	public function set_name( $value ) {
		$this-&gt;set_prop( 'name', wp_check_invalid_utf8( $value ) );
	}

	/*
	|--------------------------------------------------------------------------
	| Other Methods
	|--------------------------------------------------------------------------
	*/

	/**
	 * Type checking.
	 *
	 * @param  string|array $type Type.
	 * @return boolean
	 */
	public function is_type( $type ) {
		return is_array( $type ) ? in_array( $this-&gt;get_type(), $type, true ) : $type === $this-&gt;get_type();
	}

	/**
	 * Calculate item taxes.
	 *
	 * @since  3.2.0
	 * @param  array $calculate_tax_for Location data to get taxes for. Required.
	 * @return bool  True if taxes were calculated.
	 */
	public function calculate_taxes( $calculate_tax_for = array() ) {
		if ( ! isset( $calculate_tax_for['country'], $calculate_tax_for['state'], $calculate_tax_for['postcode'], $calculate_tax_for['city'] ) ) {
			return false;
		}
		if ( '0' !== $this-&gt;get_tax_class() &amp;&amp; 'taxable' === $this-&gt;get_tax_status() &amp;&amp; wc_tax_enabled() ) {
			$calculate_tax_for['tax_class'] = $this-&gt;get_tax_class();
			$tax_rates                      = WC_Tax::find_rates( $calculate_tax_for );
			$taxes                          = WC_Tax::calc_tax( $this-&gt;get_total(), $tax_rates, false );

			if ( method_exists( $this, 'get_subtotal' ) ) {
				$subtotal_taxes = WC_Tax::calc_tax( $this-&gt;get_subtotal(), $tax_rates, false );
				$this-&gt;set_taxes(
					array(
						'total'    =&gt; $taxes,
						'subtotal' =&gt; $subtotal_taxes,
					)
				);
			} else {
				$this-&gt;set_taxes( array( 'total' =&gt; $taxes ) );
			}
		} else {
			$this-&gt;set_taxes( false );
		}

		do_action( 'woocommerce_order_item_after_calculate_taxes', $this, $calculate_tax_for );

		return true;
	}

	/*
	|--------------------------------------------------------------------------
	| Meta Data Handling
	|--------------------------------------------------------------------------
	*/

	/**
	 * Wrapper for get_formatted_meta_data that includes all metadata by default. See https://github.com/woocommerce/woocommerce/pull/30948
	 *
	 * @param string $hideprefix  Meta data prefix, (default: _).
	 * @param bool   $include_all Include all meta data, this stop skip items with values already in the product name.
	 * @return array
	 */
	public function get_all_formatted_meta_data( $hideprefix = '_', $include_all = true ) {
		return $this-&gt;get_formatted_meta_data( $hideprefix, $include_all );
	}

	/**
	 * Expands things like term slugs before return.
	 *
	 * @param string $hideprefix  Meta data prefix, (default: _).
	 * @param bool   $include_all Include all meta data, this stop skip items with values already in the product name.
	 * @return array
	 */
	public function get_formatted_meta_data( $hideprefix = '_', $include_all = false ) {
		$formatted_meta    = array();
		$meta_data         = $this-&gt;get_meta_data();
		$hideprefix_length = ! empty( $hideprefix ) ? strlen( $hideprefix ) : 0;
		$product           = is_callable( array( $this, 'get_product' ) ) ? $this-&gt;get_product() : false;
		$order_item_name   = $this-&gt;get_name();

		foreach ( $meta_data as $meta ) {
			if ( empty( $meta-&gt;id ) || '' === $meta-&gt;value || ! is_scalar( $meta-&gt;value ) || ( $hideprefix_length &amp;&amp; substr( $meta-&gt;key, 0, $hideprefix_length ) === $hideprefix ) ) {
				continue;
			}

			$meta-&gt;key     = rawurldecode( (string) $meta-&gt;key );
			$meta-&gt;value   = rawurldecode( (string) $meta-&gt;value );
			$attribute_key = str_replace( 'attribute_', '', $meta-&gt;key );
			$display_key   = wc_attribute_label( $attribute_key, $product );
			$display_value = wp_kses_post( $meta-&gt;value );

			if ( taxonomy_exists( $attribute_key ) ) {
				$term = get_term_by( 'slug', $meta-&gt;value, $attribute_key );
				if ( ! is_wp_error( $term ) &amp;&amp; is_object( $term ) &amp;&amp; $term-&gt;name ) {
					$display_value = $term-&gt;name;
				}
			}

			// Skip items with values already in the product details area of the product name.
			if ( ! $include_all &amp;&amp; $product &amp;&amp; $product-&gt;is_type( 'variation' ) &amp;&amp; wc_is_attribute_in_product_name( $display_value, $order_item_name ) ) {
				continue;
			}

			$formatted_meta[ $meta-&gt;id ] = (object) array(
				'key'           =&gt; $meta-&gt;key,
				'value'         =&gt; $meta-&gt;value,
				'display_key'   =&gt; apply_filters( 'woocommerce_order_item_display_meta_key', $display_key, $meta, $this ),
				'display_value' =&gt; wpautop( make_clickable( apply_filters( 'woocommerce_order_item_display_meta_value', $display_value, $meta, $this ) ) ),
			);
		}

		return apply_filters( 'woocommerce_order_item_get_formatted_meta_data', $formatted_meta, $this );
	}

	/*
	|--------------------------------------------------------------------------
	| Array Access Methods
	|--------------------------------------------------------------------------
	|
	| For backwards compatibility with legacy arrays.
	|
	*/

	/**
	 * OffsetSet for ArrayAccess.
	 *
	 * @param string $offset Offset.
	 * @param mixed  $value  Value.
	 */
	#[\ReturnTypeWillChange]
	public function offsetSet( $offset, $value ) {
		if ( 'item_meta_array' === $offset ) {
			foreach ( $value as $meta_id =&gt; $meta ) {
				$this-&gt;update_meta_data( $meta-&gt;key, $meta-&gt;value, $meta_id );
			}
			return;
		}

		if ( array_key_exists( $offset, $this-&gt;data ) ) {
			$setter = &quot;set_$offset&quot;;
			if ( is_callable( array( $this, $setter ) ) ) {
				$this-&gt;$setter( $value );
			}
			return;
		}

		$this-&gt;update_meta_data( $offset, $value );
	}

	/**
	 * OffsetUnset for ArrayAccess.
	 *
	 * @param string $offset Offset.
	 */
	#[\ReturnTypeWillChange]
	public function offsetUnset( $offset ) {
		$this-&gt;maybe_read_meta_data();

		if ( 'item_meta_array' === $offset || 'item_meta' === $offset ) {
			$this-&gt;meta_data = array();
			return;
		}

		if ( array_key_exists( $offset, $this-&gt;data ) ) {
			unset( $this-&gt;data[ $offset ] );
		}

		if ( array_key_exists( $offset, $this-&gt;changes ) ) {
			unset( $this-&gt;changes[ $offset ] );
		}

		$this-&gt;delete_meta_data( $offset );
	}

	/**
	 * OffsetExists for ArrayAccess.
	 *
	 * @param string $offset Offset.
	 * @return bool
	 */
	#[\ReturnTypeWillChange]
	public function offsetExists( $offset ) {
		$this-&gt;maybe_read_meta_data();
		if ( 'item_meta_array' === $offset || 'item_meta' === $offset || array_key_exists( $offset, $this-&gt;data ) ) {
			return true;
		}
		return array_key_exists( $offset, wp_list_pluck( $this-&gt;meta_data, 'value', 'key' ) ) || array_key_exists( '_' . $offset, wp_list_pluck( $this-&gt;meta_data, 'value', 'key' ) );
	}

	/**
	 * OffsetGet for ArrayAccess.
	 *
	 * @param string $offset Offset.
	 * @return mixed
	 */
	#[\ReturnTypeWillChange]
	public function offsetGet( $offset ) {
		$this-&gt;maybe_read_meta_data();

		if ( 'item_meta_array' === $offset ) {
			$return = array();

			foreach ( $this-&gt;meta_data as $meta ) {
				$return[ $meta-&gt;id ] = $meta;
			}

			return $return;
		}

		$meta_values = wp_list_pluck( $this-&gt;meta_data, 'value', 'key' );

		if ( 'item_meta' === $offset ) {
			return $meta_values;
		} elseif ( 'type' === $offset ) {
			return $this-&gt;get_type();
		} elseif ( array_key_exists( $offset, $this-&gt;data ) ) {
			$getter = &quot;get_$offset&quot;;
			if ( is_callable( array( $this, $getter ) ) ) {
				return $this-&gt;$getter();
			}
		} elseif ( array_key_exists( '_' . $offset, $meta_values ) ) {
			// Item meta was expanded in previous versions, with prefixes removed. This maintains support.
			return $meta_values[ '_' . $offset ];
		} elseif ( array_key_exists( $offset, $meta_values ) ) {
			return $meta_values[ $offset ];
		}

		return null;
	}
}
</textarea><br>
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