I have two arrays, $array_1 and $array_2.
If a value in $array_2 is also found in $array_1 it should be deleted from $array_1.
The same value might be found several times in both of the arrays. Is the value present in $array_2, regardless of number of appearances, it should be deleted from all appearances in $array_1.
Script language: php
What procedure do you recommend?