woocommerce_order_item_meta_start │ action-hook │ WC 1.0

Usage

add_action( 'woocommerce_order_item_meta_start', 'wp_kama_woocommerce_order_item_meta_start_action', 10, 4 );

/**
 * Function for `woocommerce_order_item_meta_start` action-hook.
 * 
 * @param  $item_id 
 * @param  $item    
 * @param  $order   
 * @param  $false   
 *
 * @return void
 */
function wp_kama_woocommerce_order_item_meta_start_action( $item_id, $item, $order, $false ){

	// action...
}

$item_id

-

$item

-

$order

-

$false

-

Where the hook is called

do_action( 'woocommerce_order_item_meta_start', $item_id, $item, $order, false );

do_action( 'woocommerce_order_item_meta_start', $item_id, $item, $order, $plain_text );

do_action( 'woocommerce_order_item_meta_start', $item_id, $item, $order, $plain_text );

do_action( 'woocommerce_order_item_meta_start', $item_id, $item, $order, false );

Where the hook is used in WooCommerce