For example, in this piece of sample code :
 $session = new Redis([
     'uniqueId'   => 'my-private-app',
     'host'       => 'localhost',
     'port'       => 6379,
     'auth'       => 'foobared',
     'persistent' => false,
     'lifetime'   => 3600,
     'prefix'     => 'my_'
     'index'      => 1,
 ]);
What does each item mean of the array as parameter? How will the items be used if I set them, such as uniqueId, prefix, index.
And how to format codes in this editor by the way.