combine two php array for json encode - arrays

Question

Presently m working with CakePhp..i got some problem with combining two array and prepare for a json encoded array.. i used array_merge() property but its not working.. how can i encoded both of these two array..
M doing like this :
return json_encode(array_merge ($product_list,$price_list));
i have two php array as follows :
array 1:
Array
(
[0] => Array
(
[PriceList] => Array
(
[price_id] => 2
[price_name] => abc
[date_time] => 2015-07-06 16:22:56
[dealer_type] => Dealer
[purpose] => dealer
[status] => ACTIVE
)
)
[1] => Array
(
[PriceList] => Array
(
[price_id] => 3
[price_name] => xyz
[date_time] => 2015-07-06 16:22:56
[dealer_type] => Dealer
[purpose] => dealer
[status] => ACTIVE
)
)
)
array 2:
Array
(
[0] => Array
(
[Product] => Array
(
[cat_id] => 1
[subcat_id] => 3
[brand_id] => 1
[p_code] => PP12567
[name] => akai
[model_no] =>
[specification] => color tv
[color] =>
[quality] =>
[size] =>
[p_unavail] => 1
[demo_avail] => 0
[brochure] =>
[status] => active
)
[ProductPrice] => Array
(
[id] => 154
[p_code] => PP12567
[price_id] => 1
[quantity] => 233
[purchase_price] => 344.00
[selling_price] => 44.00
[discount_price] => 33.00
[tax] => 5.00
[datetime] => 2015-07-23 15:47:11
)
[ProductSubCategory] => Array
(
[subcat_id] => 3
[cat_id] => 1
[subcat_name] => samsung
[status] => active
)
[ProductCategory] => Array
(
[cat_id] => 1
[cat_name] => Electronics
[cat_type] => Product
[status] => active
)
)
[1] => Array
(
[Product] => Array
(
[cat_id] => 1
[subcat_id] => 4
[brand_id] => 1
[p_code] => PBC-676767
[name] => music
[model_no] => 33
[specification] =>
[color] =>
[quality] =>
[size] =>
[p_unavail] => 0
[demo_avail] => 0
[brochure] =>
[status] => active
)
[ProductPrice] => Array
(
[id] => 156
[p_code] => PBC-676767
[price_id] => 1
[quantity] => 767
[purchase_price] => 54.00
[selling_price] => 55.00
[discount_price] => 22.00
[tax] => 3.00
[datetime] => 2015-07-23 15:47:11
)
[ProductSubCategory] => Array
(
[subcat_id] => 4
[cat_id] => 1
[subcat_name] => sony
[status] => active
)
[ProductCategory] => Array
(
[cat_id] => 1
[cat_name] => Electronics
[cat_type] => Product
[status] => active
)
)
)
how to combine these two array into one and encoded into a json array..

Answer 1

You have to use array_merge but not directly on array1 and array2:
$toEncodeArray = [array_merge ($array1[0], $array2[0])] ;
If you only want the associative array (without the wrapping array), simply do:
$toEncodeArray = array_merge ($array1[0], $array2[0]) ;