Snippet to loop through WooCommerce cart items and conduct checks or perform actions

cart-items-loop.php

<?php

foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
	$product = $cart_item['data'];
	
	// GET ITEM LINK
	$link = $product->get_permalink( $cart_item );
	
	// GET ITEM CART PRICE
	$price = WC()->cart->get_product_price( $product );
	
	// GET ITEM REGULAR PRICE
	$regularPrice = $product->get_regular_price();

	// GET ITEM SALE PRICE
	$regularPrice = $product->get_sale_price();

	// SET ITEM PRICE TO 25
	$product->set_price( 25 );
	
	// GET ITEM QUANTITY
	$quantity = $cart_item['quantity'];
	
	// GET SUBTOTAL
	$subtotal = WC()->cart->get_product_subtotal( $product, $cart_item['quantity'] );
	
	// CHECK IF PRODUCT ID IS 12345
	if ( $cart_item['product_id'] == 12345 ) {
		// Do something
	}

	// CHECK IF PRODUCT BELONGS TO CATEGORY ID 25
	if ( in_array( 25, $cart_item['data']->get_category_ids() ) ) {
		// Do something
	}
	
	// CHECK IF ITEM HAS CUSTOM FIELD 'custom_field'
	if ( isset( $cart_item['custom_field'] ) ) {
		// Do something
	}
} 

?>