Consistency-level can be picked per-query:


$m = new MongoClient;
$c = $m->workout->steps;
$c->insert( [
    'person' => 'derickr',
    'steps_made' => [
        '20140201' => 10800
    ],
    *[ 'w' => 1 ]*
);
But also with defaults:


$m = new MongoClient("mongodb://localhost/?w=*majority*");