Convert non-associative array to associative array

gistfile1.php

<?php

$segments = ['one', 'two', 'three'];

$copy  = $segments;
$assoc = [];

foreach ($segments as $key => $seg)
{
    $segment = next($copy);
    
    if (! ($key % 2))
    {
      $assoc[$seg] = $segment;
    }
}
// outputs ['one' => 'two', 'three' => false];