@see http://less.carbonfairy.org/post/80789170/php-param

jquery.phparam.js

(function($) {
	$.phparam = function(o) {
		var ret = {};
		var root, tree = [];
		$.each(o, function deep(k, v) {
			if (!root) root = k;
			else tree.push(k);

			if (typeof v == 'object')
				$.each(v, deep);
			else {
				var array = tree.length ? '['+tree.join('][')+']' : '';
				ret[root+array] = v;
			}
			if (!tree.length) root = null;
			tree.pop();
		});
		return $.param(ret);
	};
})(jQuery);