Online PHP editor | output for 5tr8J

<?php $zm = [ 6000 => [ 0 => [ 'wskaznik' => 100 ], 1 => [ 'wskaznik' => 100 ] ], 8000 => [ 0 => [ 'wskaznik' => 50 ], 1 => [ 'wskaznik' => 50 ] ], 4000 => [ 0 => [ 'wskaznik' => 200 ], 1 => [ 'wskaznik' => 200 ] ], ]; $counts = array(); $keys = array_keys($zm); foreach ($zm as $key => $value){ $counts[] = $value[0]['wskaznik']; } $counts_copy = $counts; array_multisort($counts, $zm); array_multisort($counts_copy, $keys); $out = array_combine($keys, $zm); echo "<pre>"; print_r($out); echo "</pre>"; exit;