Assume we have an array
$a = array('a', 'b', 'c');
We need to get an array
$a = array('a', 'b', 'c', 'd', 'e');
Should we use
$a = array_merge($a, array('d', 'e'));
or
$a[] = 'd';
$a[] = 'e';
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both are identical in this situation since you dont have any ordered or named keys to be concerned about. use whichever you prefer.