调用未定义方法MongoDB::find()

Question

下面是代码：

require_once("config.php");
class xy {
// List all the ingredients in a container
public function objectsInContainer($container) {
    global $mongo, $box;
    $hereUGo = $mongo->selectDB($box);
    $cursor = $hereUGo->find();
    return $cursor;
}
}

在config.php里

$mongo = new Mongo();
$box = $mongo->selectDB($box);

PHP告诉我PHP Fatal error: Call to undefined method MongoDB::find()。我做错了什么？

Answer 1

MongoDB没有方法find。搜索前必须选择集合。

http://www.php.net/manual/en/class.mongocollection.php