<?php $arrays = [ 'a' => [ 'name' => "Name 1", 'age' => "99", 'add' => "" ], 'b' => [ 'name' => "Name 2", 'age' => "99", 'add' => "Add2" ], 'c' => [ 'name' => "Name 3", 'age' => "99", 'add' => "Add3" ], 'd' => [ 'name' => "", 'age' => "", 'add' => "Add4" ] ]; $output = array_map(function($row) { return array_keys(array_filter($row, function ($e) { return empty($e) && $e !== 0; })); }, $arrays); print_r(array_filter($output));
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