[Trying to output multiple <forms>'s using for each, not working]

//display an external link or form button

  if ($product_link = $meta['mp_product_link']) {



    $button = '<a class="mp_link_buynow" href="' . esc_url($product_link) . '">' . __('Buy Now »', 'mp') . '</a>';



  } else {

    if ($all_out) {

      $button .= '<span class="mp_no_stock">' . __('Out of Stock', 'mp') . '</span>';

    } else {

	$button = '<div class="mp_product_variations" name="variation">';



		//create select list if more than one variation

	  if (is_array($meta["mp_price"]) && count($meta["mp_price"]) > 1 && empty($meta["mp_file"])) {
		  
		  // for each as

			foreach ($meta["mp_price"] as $key => &$value) {

			  $disabled = (in_array($key, $no_inventory)) ? ' disabled="disabled"' : '';

			$variation_select = '<form name="' . $key . '" class="mp_buy_form" method="post" action="' . mp_cart_link(false, true) . '">\n';
			  
			  $variation_select .= '<input type="hidden" name="product_id" value="' . $post_id . '" />';
			  $variation_select .= '<input type="hidden" name="variation" value="' . $key . '">';
			  
			  $variation_select .= '<span>' . esc_html($meta["mp_var_name"][$key]) . ' - ';
			  

				if ($meta["mp_is_sale"] && $meta["mp_sale_price"][$key]) {

	        $variation_select .= $mp->format_currency('', $meta["mp_sale_price"][$key]);

	      } else {

	        $variation_select .= $mp->format_currency('', $value);

	      }$variation_select .= "</span>\n";

	      
		  
		  if ($context == 'list') {

      if ($variation_select) {

        	$variation_select .= '<a class="mp_link_buynow" href="' . get_permalink($post_id) . '">' . __('Choose Option »', 'mp') . '</a>';

      } else if ($settings['list_button_type'] == 'addcart') {

        $variation_select .= '<input type="hidden" name="action" value="mp-update-cart" />';

        $variation_select .= '<input class="mp_button_addcart" type="submit" name="addcart" value="' . __('Add To Cart »', 'mp') . '" />';

      } else if ($settings['list_button_type'] == 'buynow') {

        $variation_select .= '<input class="mp_button_buynow" type="submit" name="buynow" value="' . __('Buy Now »', 'mp') . '" />';

      }

    } else {



      $button .= $variation_select;



      //add quantity field if not downloadable

      if ($settings['show_quantity'] && empty($meta["mp_file"])) {

        $button .= '<span class="mp_quantity"><label>' . __('Quantity:', 'mp') . ' <input class="mp_quantity_field" type="text" size="1" name="quantity" value="1" /></label></span> ';

      }



      if ($settings['product_button_type'] == 'addcart') {

        $button .= '<input type="hidden" name="action" value="mp-update-cart" />';

        $button .= '<input class="mp_button_addcart" type="submit" name="addcart" value="' . __('Add To Cart »', 'mp') . '" />';

      } else if ($settings['product_button_type'] == 'buynow') {

        $button .= '<input class="mp_button_buynow" type="submit" name="buynow" value="' . __('Buy Now »', 'mp') . '" />';

      }

    }   $variation_select .= "</form>\n";


	    } //end for each

      $variation_select .= '</div>';
	  

 		} else {

      $button .= '<input type="hidden" name="variation" value="0" />';

		}



    }

  }

 

Everything inbetween "for each" is being looped, except for the <form>. How can I get it to include <form> and </form> in the loop?