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[General Snippets][Hide other shipping methods when “Free Shipping” is available] Hides all other shipping methods but free_shipping if it’s available. Compatible with Shipping zones.
/**
* Hide shipping rates when free shipping is available.
* Updated to support WooCommerce 2.6 Shipping Zones.
*
* @param array $rates Array of rates found for the package.
* @return array
*/
function my_hide_shipping_when_free_is_available( $rates ) {
$free = array();
foreach ( $rates as $rate_id => $rate ) {
if ( 'free_shipping' === $rate->method_id ) {
$free[ $rate_id ] = $rate;
break;
}
}
return ! empty( $free ) ? $free : $rates;
}
add_filter( 'woocommerce_package_rates', 'my_hide_shipping_when_free_is_available', 100 );
@faiyazalam

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commented Mar 16, 2018

Warning! I found out that woocommerce_package_rates hook is not fired everytime, but only when you change items or quantity of items in your cart.

Source: https://stackoverflow.com/a/26296461/4380588

@stratboy

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commented Mar 30, 2018

@faiyazalam this is not true to me, using woocommerce 3.3.4, on wp4.9.4, Bistro theme.

@Mr-Alexander

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commented Feb 23, 2019

On line #18, where you call the add_filter( ... ), you are missing the arguments for $accepted_args, it should be specified to 2, since the filter is called with 2 arguments:

from wp-content/plugins/woocommerce/includes/class-wc-shipping.php

$package['rates'] = apply_filters( 'woocommerce_package_rates', $package['rates'], $package );

add_filter( 'woocommerce_package_rates', 'my_hide_shipping_when_free_is_available', 100, 2 );

Hope I am not missing anything.

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