woocommerce-correios PAC cost filter

woocommerce-correios-pac-cost-filter.php

/**
 * yourprefix_free_shipping_pac function.
 * filters Woocommerce Correio's PAC shipping method cost to zero
 * 
 * @access public
 * @param array $arr Array with data sent by woocommerce-correios WC_Correios_International_Shipping and WC_Correios_Shipping classes
 * @param int $instance_id sent by woocommerce-correios WC_Correios_International_Shipping and WC_Correios_Shipping classe
 * @return array
 */
function yourprefix_free_shipping_pac($arr, $instance_id){
    $arr['cost'] = 000;
    
    // you may filter by instance_id. For example, to filter only in certain shipping zones
    // you find this parameter on shipping zone settings pages (e.g. wp-admin/admin.php?page=wc-settings&tab=shipping&instance_id=5)
    // if ( === $instance_id ) {
    // $arr['cost'] = 000;
    // }

    return $arr;
}
add_filter( 'woocommerce_correios_correios-pac_rate', 'yourprefix_free_shipping_pac');

You can filter other Woocommerce Correios shiping methods by changing 'correios-pac' in filter name for the new methodo id . (e.g. 'correios-carta-registrada', 'correios-sedex-hoje', 'correios-sedex', 'correios-sedex-10-envelope' ).

Example:

function youprefix_sedex_hoje_gratis($arr, $instance_id){
    $arr['cost'] = 000;
    return $arr;
}
add_filter( 'woocommerce_correios_correios-sedex-hoje_rate', 'yourprefix_sedex_hoje_gratis');