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.
18 Instagram Stats Every Marketer Should Know for 2017. 1  1. 7 out of 10 Hashtags on Instagram Are Branded. 2  2. 70.7% of US Businesses Are Using Instagram in 2017. 3  3. 80% of Users Follow At Least One Business on Instagram. 4  4. Instagram Expects to Accrue $4 Billion in Mobile Ad Revenue in 2017. 5  5. 25% of Instagram Ads Are Single Videos.