Change Amount Donated

/**

 * This code snippet shows how you can change what amount is shown as donated for a particular campaign.

 *

 * @param   string              $amount   The default amount.

 * @param   Charitable_Campaign $campaign The campaign we're getting this for.

 * @param   boolean             $sanitize Whether the sanitize the amount.

 * @return  string

 */

function ed_charitable_change_donated_amount( $amount, Charitable_Campaign $campaign, $sanitize ) {

    $amount = $amount * 0.9;

    if ( $sanitize ) {

        $amount = charitable_sanitize_amount( $amount );

    }

    return $amount;

}

add_filter( 'charitable_campaign_donated_amount', 'ed_charitable_change_donated_amount', 10, 3 );