try this code
<?php
$arr1=array("campaign_details" => array
(
"campaign_name" => "democampaign",
"campaign_category" => "appsGames",
"campaign_sub_category" => "Action",
"campaign_type" => "cpc",
"campaign_start_date" => "MM/DD/YYYY",
"campaign_end_date" => "MM/DD/YYYY",
"campaign_start_time" => "HH:mm",
"campaign_end_time" => "HH:mm"
),
"campaign_budget_info" => array
(
"campaign_daily_budget" => 0.2,
"campaign_hourly_budget" => 0.3,
"campaign_bid" => 0.1,
"campaign_budget" => 1,
),
"campaign_targetting_info" => array
(
"campaign_os_type" => "Apple",
"country_code" => "IN,AF,AG",
"state_id" => array
(
"IN" => "1,2,3",
"AF" => "4,5,6",
"AG" => "7,8,9"
),
"carrier" => Array
(
"IN" => "Tata,Aircel,RCOM,Vodafone,Airtel,Idea
Cellular,Uninor,Dishnet,BSNL",
"AF" => "",
"AG" => "",
),
"isp" => "",
"device_targeting" => "iphone,ipad",
"conversion" => "",
),
"campaign_creative_info" => array
(
"campaign_domain" => "abcd.com",
"campaign_click_url" => "http://url-to-redirect-users-to-after-
they-click.com/",
"campaign_banner_size" => "URL640x1136",
"campaign_banner_url" => "http://imageurl.com/",
"campaign_creative_type" => "image",
),
"campaign_black_list_white_list_info" => array
(
"black_list_app_ids" =>
"5388dceb96c4b54a0844e4cb,5330b3864dab485e6219ff54",
"black_list_device_ids" => "aaaaaaaa-bbbb-cccc-
0000-222222221111,12f93cf2-91ed-4f8f-aae7-a0520bebdd2r",
"black_list_ip_addresses" => "123.123.12.123,10.100.100.100",
"white_list_app_ids" =>
"5388dceb96c4b54a0844e4cb,5330b3864dab485e6219ff54",
"white_list_device_ids" => "aaaaaaaa-bbbb-cccc-
0000-222222221111,12f93cf2-91ed-4f8f-aae7-a0520bebdd2r",
"white_list_ip_addresses" => "123.123.12.123,10.100.100.100",
)
);
$arr2=array("campaign_details" =>array
(
"campaign_name" => 1,
"campaign_category" => 1,
"campaign_sub_category" => 1,
"campaign_type" => 1,
"campaign_start_date" => 1,
"campaign_end_date" => 1,
"campaign_start_time" => 1,
"campaign_end_time" => 1
),
"campaign_budget_info" => array
(
"campaign_daily_budget" => 1,
"campaign_hourly_budget" => 1,
"campaign_bid" => 1,
"campaign_budget" => 1,
),
"campaign_targetting_info" => array
(
"campaign_os_type" => 1,
"country_code" => 1,
"state_id" => array
(
"IN" => 1,
"AF" => 1,
"AG" => 1,
),
"carrier" => array
(
"IN" => 1,
"AF" => 1,
"AG" => 1,
),
"isp" => 1,
"device_targeting" => 1,
"conversion" => 1,
),
"campaign_creative_info" =>array
(
"campaign_domain" => 1,
"campaign_click_url" => 1,
"campaign_banner_size" => 1,
"campaign_banner_url" => 1,
"campaign_creative_type" => 1,
),
"campaign_black_list_white_list_info" => array
(
"black_list_app_ids" => 1,
"black_list_device_ids" => 1,
"black_list_ip_addresses" => 1,
"white_list_app_ids" => 1,
"white_list_device_ids" => 1,
"white_list_ip_addresses" => 1,
)
);
function array_keys_multi(array $array)
{
$keys = array();
foreach ($array as $key => $value) {
$keys[] = $key;
if (is_array($array[$key])) {
$keys = array_merge($keys, array_keys_multi($array[$key]));
}
}
return $keys;
}
$resArr=array();
$a=array_keys_multi($arr1);
$b=array_keys_multi($arr2);
$c=array_diff($a,$b);
if(count($c) > 0){
echo "There is differnce<br/>";
echo "<pre>";
print_r($c);
}else
echo "There is no differnce<br/>";
?>