Php/docs/mongocursor.fields
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MongoCursor::fields
(PECL mongo >=1.0.6)
MongoCursor::fields — Sets the fields for a query
说明
public MongoCursor::fields
( array $f
) : MongoCursor
Fields are specified by "fieldname" : bool. true
indicates that a field should be returned, false indicates that it should
not be returned. You can also use 1 and 0 instead of true and false.
Thus, to return only the "summary" field, one could say:
<?php$cursor->fields(array("summary" => true));?>
To return all fields except the "hidden" field:
<?php$cursor->fields(array("hidden" => false));?>
参数
f- Fields to return (or not return).
返回值
Returns this cursor.
错误／异常
Throws MongoCursorException if this cursor has started iterating or a scalar argument is given.
