Question

Say I had this code

$x = array("a", "b", "c", "d", "e");

Is there any function that I could call after creation to duplicate the values, so in the above example $x would become

array("a", "b", "c", "d", "e", "a", "b", "c", "d", "e");

I thought something like the following but it doesn’t work.

$x = $x + $x;

Answer 1

$x = array("a", "b", "c", "d", "e");

$x = array_merge($x,$x);

Merging an array onto itself will repeat the values as duplicates in sequence.