( [0] => Not set, [1] => 5688830, [2] => 5688886, [3] => 5688894, [4] => 5688915, [5] => 5688935, [6] => 5700031, [7] => 5700032, [8] => 5711342, [9] => 5711340, [10] => 5720596, [11] => 5720597, [12] => 5728983, [13] => 5728984, [14] => 5740001, [15] => 5739999, [16] => 5758028, [17] => 5758029, [18] => 5791209, [19] => 5791207, [20] => 5791405, [21] => 5791404, [22] => 5892482, [23] => 5893724, [24] => 5893725, [25] => 5893726, [26] => 5893727, [27] => 5893728, [28] => 5893729, [29] => 5893730, [30] => 5893731, [31] => 5962828, [32] => 5962830, [33] => 5962831, [34] => 5962832, [35] => 5962833, [36] => 5966686, [37] => 5974444, [38] => 5974445, [39] => 5990554, [40] => 6068591, ) ; get the values into a string

$array = array(0,5688830,5688886,5688894,5688915,5688935,5700031,5700032,5711342,5711340,5720596,5720597,5728983,5728984,5740001,5739999,5758028,5758029,5791209,5791207,5791405,5791404,5892482,5893724,5893725,5893726,5893727,5893728,5893729,5893730,5893731,5962828,5962830,5962831,5962832,5962833,5966686,5974444,5974445,5990554,6068591);

$result = "";

foreach ($array as $value) {
  $result .= $value . ",";
}

echo $result;