Question

A PHP array can have arrays for its elements. And those arrays can have arrays and so on and so forth. Is there a way to find out the maximum nesting that exists in a PHP array? An example would be a function that returns 1 if the initial array does not have arrays as elements, 2 if at least one element is an array, and so on.

Answer 1

This should do it:

<?php  function array_depth(array $array) {     $max_depth = 1;      foreach ($array as $value) {         if (is_array($value)) {             $depth = array_depth($value) + 1;              if ($depth > $max_depth) {                 $max_depth = $depth;             }         }     }      return $max_depth; }  ?> 

Edit: Tested it very quickly and it appears to work.