Código PHP:
Ver original<?php
$arr = [];
$arr[12] = array (4,'rrrrr',60); $arr[14] = array (4,'fffffff',60); $arr[15] = array (4,'yyyy',50);
foreach ($arr as $ox => $ar)
foreach ($ar as $ix => $elem)
echo "[$ox][$ix] = $elem <br/>";
Código RESULTADO:
Ver original[12][0] = 4
[12][1] = rrrrr
[12][2] = 60
[14][0] = 4
[14][1] = fffffff
[14][2] = 60
[15][0] = 4
[15][1] = yyyy
[15][2] = 50