<?php function hasNonEmptyArray(array $array): bool { $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($array)); foreach ($iterator as $k => $v) { echo "Found element $k\n"; return true; } return false; } $array = [ [ 'one' => [], 'two' => [ 'a' => [ 'foo' => [], ], 'b' => [] ], 'three' => [ 'c' => [ 'fizz' => 'buzz' ] ] ] ]; var_export(hasNonEmptyArray($array));
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