Did you not read what I pasted? HHVM is using 2MB of RAM. PHP 7 is using 4MB of RAM for the same array. How much more is 4MB compared to 2MB? The answer, you'

Did you not read what I pasted? HHVM is using 2MB of RAM. PHP 7 is using 4MB of RAM for the same array. How much more is 4MB compared to 2MB? The answer, you'll find, is very close to 100%.