Set a minimum order amount for checkout

Set a minimum order amount for checkout.php

<?php

/**
 * Set a minimum order amount for checkout
 */
add_action( 'woocommerce_before_checkout_form', 'wc_minimum_order_amount' );
add_action( 'woocommerce_checkout_process', 'wc_minimum_order_amount' );
add_action( 'woocommerce_before_cart' , 'wc_minimum_order_amount' );
 
function wc_minimum_order_amount() {
    // Set this variable to specify a minimum order value
    $minimum = 15;

    if ( WC()->cart->total < $minimum ) {
		
		/* DISABILITARE IL PULSANTE PROCEDI AL CHECKOUT */
		function disable_checkout_button_no_shipping() { 
			 echo '<button class="checkout-button" disabled style="cursor: no-drop;">Concludi ordine</a>';
			remove_action( 'woocommerce_proceed_to_checkout', 'woocommerce_button_proceed_to_checkout', 20 );
		}
		
add_action( 'woocommerce_proceed_to_checkout', 'disable_checkout_button_no_shipping' );

        if( is_cart() ) {

            wc_print_notice( 
                sprintf( 'Il totale del tuo ordine attuale è di %s: devi avere un ordine con un minimo di %s per poter procedere' , 
                    wc_price( WC()->cart->total ), 
                    wc_price( $minimum )
                ), 'error' 
            );

        }else{ 
		
		wp_redirect( esc_url( WC()->cart->get_cart_url() ) );
                exit;
	}
    }
}