WooCommerce Free Shipping if over 5 pounds - php

Question

I'm trying to write a function that will offer free shipping only (remove all other options) if the order is over 5 pounds (80 ounces), but it doesn't work although the code seems correct.
This is what I have:
// Hide ALL shipping options but FREe when over 80 ounches (5 pounds)
add_filter( 'woocommerce_available_shipping_methods', 'ship_free_if_over_five_pounds' , 10, 1 );
/**
* Hide ALL Shipping option but free if over 5 pounds
*
* #param array $available_methods
*/
function ship_free_if_over_five_pounds( $available_methods ) {
global $woocommerce;
$whats_the_weight = $woocommerce->cart->cart_contents_weight;
if($whats_the_weight != 80) :
// Get Free Shipping array into a new array
$freeshipping = array();
$freeshipping = $available_methods['free_shipping'];
// Empty the $available_methods array
unset( $available_methods );
// Add Free Shipping back into $avaialble_methods
$available_methods = array();
$available_methods[] = $freeshipping;
endif;
return $available_methods;
}
Any thoughts?
The code is based on example #19 on this site: My 25 Best WooCommerce Snippets For WordPress Part 2

Answer 1

I know that this is an old question, but I have this recent alternative…
First, in your code "if the order is over 5 pounds (80 ounces)" your if statement should be if($whats_the_weight > 80) instead of !=… But i think that your code is a little outdated if you use WooCommerce 2.6+.
After instead using global $woocommerce; with $woocommerce->cart->cart_contents_weight; you could use: WC()->cart->cart_contents_weight;
I have this much more recent code snippet based on this official thread for WooCommerce 2.6+. You should try it:
add_filter( 'woocommerce_package_rates', 'my_hide_shipping_when_free_is_available', 100 );
function my_hide_shipping_when_free_is_available( $rates ) {
$cart_weight = WC()->cart->cart_contents_weight; // Cart total weight
$free = array();
foreach ( $rates as $rate_id => $rate ) {
if ( 'free_shipping' === $rate->method_id && $cart_weight > 80 ) { // <= your weight condition
$free[ $rate_id ] = $rate;
break;
}
}
return ! empty( $free ) ? $free : $rates;
}
For WooCommerce 2.5, You should try this:
add_filter( 'woocommerce_package_rates', 'hide_shipping_when_free_is_available', 10, 2 );
function hide_shipping_when_free_is_available( $rates, $package ) {
$cart_weight = WC()->cart->cart_contents_weight; // Cart total weight
// Only modify rates if free_shipping is present
if ( isset( $rates['free_shipping'] ) && $cart_weight > 80 ) { // Here your weight condition
// To unset a single rate/method, do the following. This example unsets flat_rate shipping
unset( $rates['flat_rate'] );
// To unset all methods except for free_shipping, do the following
$free_shipping = $rates['free_shipping'];
$rates = array();
$rates['free_shipping'] = $free_shipping;
}
return $rates;
}

Answer 2

I've made an plugin where you can set the maximum weight for free shipping!
Take an look at: http://wordpress.org/plugins/woocommerce-advanced-free-shipping/