I have these three arrays:
$arr1 = ['one', 'two', 'three'];
$arr2 = ['three', 'four'];
$arr3 = ['two', 'five', 'six', 'seven'];
And this is expected result:
/* Array
(
[0] => one
[1] => two
[3] => three
[4] => four
[5] => five
[6] => six
[7] => seven
)
Here is my solution which doesn't work as expected:
print_r( array_unique( $arr1 + $arr2 + $arr3) );
/* Array
(
[0] => one
[1] => two
[2] => three
[3] => seven
)
How can I do that?