Outer loop key() access within Inner loop

[Somwrita Debnath]

I want to implement the following logic in figdice:

<?php
for ($i=0; $i<count($arr1); $i++)
{
  for ($j=0; $j<count($arr2); $j++)
  {
    if($i==$j)       //checking index of two array
      //do something;

  }
}

I want to compare the key of the inner loop with the key of the outer loop. But when I used the function key() its only given the key of the inner array. I am unable to fetch the key of outer array.

[Somwrita Debnath]

SOLUTION:

We could capture the key() of the outer Walk, into a local variable.
Example:

<div fig:walk="outer">
  <fig:mount target="outerKey" value="key()">
    <span fig:walk="inner">
      <div fig:cond="/outerKey == key()"> ... </div>
    </span>
</div>