Question

I don’t want to use array_merge() as it results in i misunderstood that all values with the same keys would be overwritten. i have two arrays

$array1 = array(0=>'foo', 1=>'bar');
$array2 = array(0=>'bar', 1=>'foo');

and would like to combine them resulting like this

array(0=>'foo', 1=>'bar',2=>'bar', 3=>'foo');

Answer 1

array_merge() appends the values of the second array to the first. It does not overwrite keys.

Your example, results in:

Array (
[0] => foo
[1] => bar
[2] => bar
[3] => foo )

However, If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. If, however, the arrays contain numeric keys, the later value will not overwrite the original value, but will be appended.

Unless this was just an example to another problem you were having?