3v4l.org

run code in 300+ PHP versions simultaneously
<?php $car = (object)[ 'general' => [ 'interior' => [ 'seats' => 'destroyed' ] ], 'other' => [ 'exterior' => [ 'hood' => 'dull' ] ] ]; $exteriorProperties = [ 'hood' => 'shiny', 'windows' => 'dirty' ]; var_export( json_decode( json_encode( array_replace_recursive( (array)$car, ['other' => ['exterior' => $exteriorProperties]] ) ) ) );

preferences:
54.68 ms | 402 KiB | 5 Q