Woo Custom Product Add to Cart and Checkout

functions.php

//
// Shortcode to add a custom Add-To-Cart and Checkout button
//
// Button displays icon, price and product name
//
function bl_add_to_cart_button( $atts ) {
    $params = shortcode_atts( array(
        'id' => null,
		'text' => '{product_name}',
		'show_icon' => 1,
		'show_price' => 1,
		'class' => 'button add_to_cart',
		'icon_class' => 'fas fa-cart-plus',
    ), $atts );

	$html = '<a class="'.$params['class'].'" ';
 
    if ( intval( $params['id'] ) > 0 && function_exists( 'wc_get_product' ) ) {

         $_product = wc_get_product( $params['id'] );
         
		$title = $params['text'];

		$link_url = ' href="'.get_bloginfo('url').'/checkout/?add-to-cart='.$params['id'].'" ';

		 if ( $params['show_price'] > 0 ) {
			$price = wc_price( $_product->get_price() );
			$title = '<span class="price">'.$price . '</span>' . $title;
		 }

		 if ( stripos($title,'{product_name}') !== false ) {
			$prod_name = $_product->get_title();
			$title = str_ireplace( '{product_name}', $prod_name, $title );
		 }

		 if ( strlen($params['icon_class']) > 0 ) {
			$icon = '<i class="'.$params['icon_class'].'"></i>';
		 }

		 $html .= $link_url.'>'.$icon.$title;

    } else {
		$html .= '>';
	}
    return $html.'</a>';
}
add_shortcode( 'bl-add-to-cart', 'bl_add_to_cart_button' );

// e.g., [bl-add-to-cart class="button add_to_cart bottom-15" id=518]