WP_Plugins_List_Table::_order_callback( array $plugin_a, array $plugin_b )

	public function _order_callback( $plugin_a, $plugin_b ) {
		global $orderby, $order;

		$a = $plugin_a[$orderby];
		$b = $plugin_b[$orderby];

		if ( $a == $b )
			return 0;

		if ( 'DESC' === $order ) {
			return strcasecmp( $b, $a );
		} else {
			return strcasecmp( $a, $b );
		}
	}