<?php $array = [ [ 'a' => '', 'b' => [ 'x' => '' ], 'c' => [ 'y'=> [ '1' => '' ] ], 'd' => '' ] ]; function empty_r(array $array): bool { foreach ($array as $v) { if (is_array($v) ? !empty_r($v) : $v) { return false; } } return true; } var_export(empty_r($array));
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