Change a users WordPress role based on their current myCRED balance.

change-role-based-on-balance

/**
 * Promote Based on Balance
 * Changes a users role based on their myCRED balance.
 * @version 1.0.4
 */
add_filter( 'mycred_add_finished', 'check_for_role_change', 99, 3 );
function check_for_role_change( $reply, $request, $mycred ) {
	// Make sure that if any other filter has declined this we also decline
	if ( $reply === false ) return $reply;

	// Exclude admins
	if ( user_can( $request['user_id'], 'manage_options' ) ) return $reply;

	extract( $request );

	// Minimum balance requirement for each role
	$thresholds = array(
		'contributor'   => 100,
		'author'        => 1000,
		'editor'        => 10000,
		'administrator' => 100000
	);

    	// Get users current balance
	$current_balance = $mycred->get_users_balance( $user_id, $type );
	$current_balance = $current_balance + $amount;

	// Check if the users current balance awards a new role
	$new_role = false;
	foreach ( $thresholds as $role => $min ) {
		if ( $current_balance > $min )
			$new_role = $role;
	}

	// Change users role if we have one
	if ( $new_role !== false )
		wp_update_user( array(
			'ID'   => $user_id,
			'role' => $new_role
		) );

	return $reply;
}