<?php $toSort = array( 1 => [ 'value' => 8000, 'key' => 1007 ], 2 => [ 'value' => 8001, 'key' => 1007 ], 3 => [ 'value' => 8002, 'key' => 1013 ], ); $result = []; foreach ($toSort as ['value' => $value, 'key' => $key]) { $result[$key][] = $value; } var_export($result);
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