arg_name: param name: $filter type: array|object description: | The filter criteria that specifies the documents{{action}}. interface: phpmethod operation: ~ optional: false replacement: action: "" --- arg_name: param name: $replacement type: array|object description: | The replacement document. interface: phpmethod operation: ~ optional: false --- arg_name: param name: $update type: array|object description: | Specifies the field and value combinations to update and any relevant update operators. ``$update`` uses MongoDB's :method:`update operators </reference/operator/update>`. Starting with MongoDB 4.2, an `aggregation pipeline <https://docs.mongodb.com/master/reference/command/update/#update-with-an-aggregation-pipeline>`_ can be passed as this parameter. interface: phpmethod operation: ~ optional: false ...