Display product image in the order review section.

functions.php

/* 
* How to add the custome code. 
* 
* Please follow below instructions:
* 1. Copy the below code.
* 2. Open your child theme's functions.php file.
* 3. Paste the copied code at the very bottom of it & save the file OR upload it on your server/hosting.
*/


/**
* Display product image in the order review section.
*
* @param string $name Product Name.
* @param array $cart_item Cart Data.
* @return string $cart_item_key cart item key.
*/
function product_image_on_checkout( $name, $cart_item, $cart_item_key ) {
	
	// Return if not checkout page.
	if ( ! is_checkout() ) {
		return $name;
	}
	
	// Get product object.
	$_product = apply_filters( 'woocommerce_cart_item_product', $cart_item['data'], $cart_item, $cart_item_key );

	// Get product thumbnail.
	$thumbnail = $_product->get_image();

	// Add wrapper to image and add some css.
	$image = '<div class="ts-product-image" style="width: 52px; height: 45px; display: inline-block; padding-right: 7px; vertical-align: middle;">'
				. $thumbnail .
			'</div>'; 

	// Prepend image to name and retun it.
	return $image . $name;
}

add_filter( 'woocommerce_cart_item_name', 'product_image_on_checkout', 10, 3 );