This is my output ,how to merge the arrays . i wnat like this : Array
(
    [0] => Array
        (
            [ht_amenity_id] => 1
            [ht_amenity_name] => Central Air Conditioning
            [ht_category] => 1
	    [ht_cat_name] => General
        )

    [1] => Array
        (
            [ht_amenity_id] => 2
            [ht_amenity_name] => Facilities for disabled guests
            [ht_category] => 1
	    [ht_cat_name] => General
        )

    [2] => Array
        (
            [ht_amenity_id] => 3
            [ht_amenity_name] => Climate control
            [ht_category] => 2
	    [ht_cat_name] => Services
        )
)



this my output .how to merge the array 


I want like this 

Array
(
    [0] => Array
        (
            [ht_amenity_id][0] => 1 
	    [ht_amenity_id][1] => 2
            [ht_amenity_name][0] => Central Air Conditioning
            [ht_amenity_name][1] => Facilities for disabled guests
            [ht_category] => 1
	    [ht_cat_name] => General
        )
    [1] => Array
        (
            [ht_amenity_id] => 3
            [ht_amenity_name] => Climate control
            [ht_category] => 2
	    [ht_cat_name] => Services
        )

)