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<?php $members = [ 'myname' => ['userid' => 52, 'age' => 46], 'isname' => ['userid' => 22, 'age' => 47], 'yourname' => ['userid' => 47, 'age' => 85] ]; var_export( array_reduce( array_keys($members), fn($result, $k) => $result + [$k => $members[$k] + [$k]], [] ) );
Output for 8.1.32, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 'myname' => array ( 'userid' => 52, 'age' => 46, 0 => 'myname', ), 'isname' => array ( 'userid' => 22, 'age' => 47, 0 => 'isname', ), 'yourname' => array ( 'userid' => 47, 'age' => 85, 0 => 'yourname', ), )
preferences:
51 ms | 407 KiB | 5 Q