php 将 MongoCursor 从 ->find() 转换为数组
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Convert a MongoCursor from ->find() to an array
提问by jini
$jokes = $collection->find();
How do I convert $jokesinto an array?
如何转换$jokes为数组？
回答by Chris Henry
You can use PHP's iterator_to_arrayfunction, as suggested in example 1 of the MongoCursordocs:
您可以iterator_to_array按照MongoCursor文档示例 1 中的建议使用 PHP 的函数：
$jokes = $collection->find();
$jokesArray = iterator_to_array($jokes);
回答by Mihai Cicu
As a side note to Chris's answer:
作为克里斯回答的旁注：
array iterator_to_array ( Traversable $iterator [, bool $use_keys = true ] )
数组 iterator_to_array ( Traversable $iterator [, bool $use_keys = true ] )
Pay attention to the optional second parameter, if it's set to true (default), the final array will be indexed using the "_id" field from each document.
注意可选的第二个参数，如果它设置为 true（默认），最终数组将使用每个文档中的“_id”字段进行索引。
If you applied a sort in the mongo query, the final array might not be what you expected, meaning that the sort order will not be preserved (unless you set the $use_keysparameter to false)
如果您在 mongo 查询中应用了排序，则最终数组可能不是您所期望的，这意味着不会保留排序顺序（除非您将$use_keys参数设置为false）
回答by satya prakash patel
iterator_to_arrayis not working for nesting more than 2 levels,
iterator_to_array不适用于嵌套超过 2 个级别，
Using typeMapyou can convert root and its document to array, It will work for any level of nesting
使用typeMap您可以将根及其文档转换为数组，它适用于任何级别的嵌套
findOne($filter,$options)
findOne($filter,$options)
$options = ["typeMap" => ['root' => 'array', 'document' => 'array']];
$collection->findOne(['myId' => $id ], $options); // returns array
find($filter,$options)
查找（$过滤器，$选项）
$options = ["typeMap" => ['root' => 'array', 'document' => 'array']];
$collection->find(['myId' => $id ], $options)->toArray();
回答by Mahesh Giri
iterator_to_array()forces the driver to load all of the results into memory, so do not do this for result sets that are larger than memory!use this
iterator_to_array()强制驱动程序将所有结果加载到内存中，因此对于大于内存的结果集不要这样做！用这个
$jokes = $collection->find();
foreach ($jokes as $joke) {
var_dump($joke);
}
回答by Delcon
a lot easier:
容易得多：
findeOne()->getArrayCopy();
as mentioned before: beware from loading large resultsets and convert them to an array
如前所述：小心加载大型结果集并将它们转换为数组
you can also set your preferences with the typeMap option
您还可以使用 typeMap 选项设置您的首选项
'typeMap' =>[
'document' => 'array',
'root' => 'array'
]
回答by hassan
in case if someone came to here, you can also use toArraymethod.
如果有人来到这里，您也可以使用toArray方法。
(mongodb >=1.0.0)
MongoDB\Driver\Cursor::toArray — Returns an array containing all results for this cursor
(mongodb >=1.0.0)
MongoDB\Driver\Cursor::toArray — 返回一个包含该游标所有结果的数组
$jokes = $collection->find()->toArray();
or :
或者 ：
$jokes = $collection->find();
$jokesArray = $jokes->toArray();
回答by Abhinav
find() basically returns MongoDB cursor http://www.php.net/manual/en/mongocollection.find.php
find() 基本上返回 MongoDB 游标 http://www.php.net/manual/en/mongocollection.find.php
this should work for your case
这应该适用于您的情况
$cursor = $collection->find();
foreach($cursor as $jokes) {
print_r($jokes);
}
