Compare arrays, and returns the differences (compare values only, using a user-defined key comparison function) array_udiff_assoc() Compare arrays, and returns the differences (compare keys and values, using a built-in function to compare the keys and a user-defined function to compare the values) array_udiff_uassoc() Compare arrays, and returns the differences (compare keys and values, using two user-defined key comparison functions)
Instagram usage is particularly strong among millennials. This year, there will be 48.2 million millennial Instagram users in the US. By 2019, nearly two-thirds of all millennial smartphone users will use Instagram.
With over 1 billion users worldwide, Facebook tends to appeal to adults, with 47% of its users over the age of 35. Twitter has over 271 million active users who tend to be younger, with 35% between the ages of 18 and 29. Of Instagramâs 200 million active users, 53% are between the ages of 18 and 29.