Set Default Donation Amount

/**

 * Set the default donation amount for all campaigns.

 *

 * @see https://github.com/Charitable/library/blob/master/donation-form/set-default-donation-amount-per-campaign.php

 *

 * @param  float|int $amount The amount to be filtered. $0 by default.

 * @return float|int

 */

function ed_charitable_set_default_donation_amount( $amount ) {

    // Return a default donation amount of $15.

	return 15;

}

add_filter( 'charitable_default_donation_amount', 'ed_charitable_set_default_donation_amount' );