The interface to vaCentral, used in phpVMS, and can be used in your own custom system.
Installation is easiest using composer. Autoloading should take care of the rest.
composer require nabeel/vacentraluse VaCentral\VaCentral;
$client = new VaCentral();
$client->setApiKey('YOUR API KEY');
# Look up an airport, returns an instance of \Vacentral\Models\Airport
$airport = $client->getAirport('KJFK');
echo $airport->icao; // Will write out KJFK