PHP - Woocommerce 3.2 Add variable shipping insurance with multiple "else if " conditions

Question

This is my first post here, I am very new to PHP so bare with me.

I need to add USPS's variable shipping rates for priority mail based on cart total. I have tried plugins but none of them work right with the USPS shipping plugin client insists on using and I have maxed budget for buying any other plugins.

I have created a child theme and added a new functions.php. That is the correct way of adding update-proof php correct?

I found a php function on Git that adds a rate based on an over/under cart amount but I need to add more else if conditions for 7 variable cart totals. Below is my best attempt at adding the conditions I need with my very limited knowledge of php. Can someone please help me get this code working? What am I missing to allow for multiple else if conditions?

add_action( 'woocommerce_cart_calculate_fees','woocommerce_custom_surcharge' );

function woocommerce_custom_surcharge() { global $woocommerce;

if ( is_admin() && ! defined( 'DOING_AJAX' ) )
    return;

$chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
$chosen_shipping = $chosen_methods[0];

if ( strpos($chosen_shipping, 'USPS_Simple_Shipping_Method' ) !== false ) {
    // this compare needed since if the string is found at beg of target, it returns '0', which is a false value

    $insurance_fee = 0;
    if ( $woocommerce->cart->cart_contents_total  <= 50 ) {
        $insurance_fee = 0;
        return;
    } else {
        if ( $woocommerce->cart->cart_contents_total  > 50  ) { 
            $insurance_fee = 2.05; 
            return; 
    } else {
         if ( $woocommerce->cart->cart_contents_total  > 100  ) { 
            $insurance_fee = 2.45; 
            return; 
    } else {
         if ( $woocommerce->cart->cart_contents_total  > 200  ) { 
            $insurance_fee = 4.60; 
            return;
    } else {
         if ( $woocommerce->cart->cart_contents_total  > 300  ) { 
            $insurance_fee = 5.50; 
            return;
    } else {
         if ( $woocommerce->cart->cart_contents_total  > 400  ) { 
            $insurance_fee = 6.40; 
            return;
    } else {
         if ( $woocommerce->cart->cart_contents_total  > 500  ) { 
            $insurance_fee = 7.30; 
            return;
    }

    $woocommerce->cart->add_fee( 'Insurance', $insurance_fee, true, '' );
}
return;

}

Answer 1

Solved! I had the statements in the wrong order, the first if statement was satisfied so none of the others were checked. Reversed them and voila! I also could have added a <= to each statement

//General Fall back for shipping and cart totals <= 50
$insurance_fee = 0;
$chosen_methods = WC()->session->get( 'USPS_Simple' );
$chosen_shipping = $chosen_methods[0]; {

    if ( $woocommerce->cart->cart_contents_total  > 500  ) { 
            $insurance_fee = 7.30; 
    } else if ( $woocommerce->cart->cart_contents_total  > 400  ) { 
            $insurance_fee = 6.40; 
    } else if ( $woocommerce->cart->cart_contents_total  > 300  ) { 
            $insurance_fee = 5.50; 
    } else if ( $woocommerce->cart->cart_contents_total  > 200  ) { 
            $insurance_fee = 4.60; 
    } else if ( $woocommerce->cart->cart_contents_total  > 100  ) { 
            $insurance_fee = 2.45; 
    } else if ( $woocommerce->cart->cart_contents_total  >= 50  ) { 
            $insurance_fee = 2.05; 
    }
}

//The fallback $insurance_fee value of 0 will be used if none of the conditions are met
$woocommerce->cart->add_fee( 'Shipping Insurance', $insurance_fee, true, '' );

}

Answer 2

So, you are returning empty in every if statement, the function will never get to the:

$woocommerce->cart->add_fee( 'Insurance', $insurance_fee, true, '' );

Take a look at the changes I've made below, I also think you should add a fallback if the shipping method is not USPS.

function woocommerce_custom_surcharge() { 
      global $woocommerce;

    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    //General Fall back for shipping and cart totals <= 50
    $insurance_fee = 0;
    $chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
    $chosen_shipping = $chosen_methods[0];

    if ( strpos($chosen_shipping, 'USPS_Simple_Shipping_Method' ) !== false ) {

        if ( $woocommerce->cart->cart_contents_total  > 500  ) { 
                $insurance_fee = 7.30; 
        } else if ( $woocommerce->cart->cart_contents_total  > 400  ) { 
                $insurance_fee = 6.40; 
        } else if ( $woocommerce->cart->cart_contents_total  > 300  ) { 
                $insurance_fee = 5.50; 
        } else if ( $woocommerce->cart->cart_contents_total  > 200  ) { 
                $insurance_fee = 4.60; 
        } else if ( $woocommerce->cart->cart_contents_total  > 100  ) { 
                $insurance_fee = 2.45; 
        } else if ( $woocommerce->cart->cart_contents_total  > 50  ) { 
                $insurance_fee = 2.05; 
        }
    }

    //The fallback $insurance_fee value of 0 will be used if none of the conditions are met
    $woocommerce->cart->add_fee( 'Insurance', $insurance_fee, true, '' );
}

Answer 3

For anyone that stumbles on this and wants to implement it I have posted the code as a gist where I keep it updated. I recently added an if statement to turn shipping insurance off if local pick up is selected

https://gist.github.com/Zach-Toth/95041d32b072109fa8fd99c60eff1c5a

Answer 4

Thank you for that, it helped me get started. I've made a small modification so that it works with percentages instead, which is much better, especially if your site deals with large amounts:

add_action( 'woocommerce_cart_calculate_fees','woocommerce_custom_surcharge' );
function woocommerce_custom_surcharge() { 
    global $woocommerce;

    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    // General Fall back for shipping and cart totals <= 50
    $insurance_percentage = 0;
    $chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
    $chosen_shipping = $chosen_methods[0]; {
      
       if ( $chosen_shipping == 'local_pickup:3' ) { 
            $insurance_percentage = 0; 
       } else {
            // Adjust the percentage value as needed, e.g., 2% would be 0.02
            $insurance_percentage = 0.025; // 2.5% insurance fee
       }
    }

    // Calculate the fee based on the cart total and the percentage
    $cart_total = $woocommerce->cart->cart_contents_total;
    $insurance_fee = $cart_total * $insurance_percentage;

    // The fee will be added if the cart total is above or equal to 100
    if ( $cart_total >= 100 ) {
        $woocommerce->cart->add_fee( 'Shipping Insurance', $insurance_fee, true, '' );
    }
}