Deleting documents
Unlike %update%, %remove% deletes *all* matched documents by default.
You can set an option to remove only the *first* matched document
demo->products;
$c->drop();
$c->insert( [ '_id' => 'blue-elephpant', 'generation' => 1, 'price' => 7.5 ] );
$c->insert( [ '_id' => 'pink-elephpant', 'generation' => 2, 'price' => 8.0 ] );
$c->insert( [ '_id' => 'green-elephpant', 'generation' => 3, 'price' => 7.5 ] );
$c->remove(
[ 'price' => [ '$lt' => 8.0 ] ], // criteria
[ 'justOne' => true ] // options: justOne
);
?>]]>