The What
Syntax
array array_diff_key ( array $array1 , array $array2 [, array $... ] );
Description
The array_diff_key function compares the keys from array1 against the keys from array2 and returns the difference. This function is like array_diff() except the comparison is done on the keys instead of the values.
If you listen carefully, you can hear the 1s and 0s flowing in your computer.
More coming soon…keep checking back.
