本文介绍了Mongo DB $或PHP中的查询的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我一辈子都想不通如何从带有 or 参数的集合中进行选择.它对我来说根本不起作用，我真的找不到任何关于它的 php 文档.
I can't figure out for the life of my to select from a collection with the or parameter. It's not working at all for me and I can't really find any documentation on it for php.
这是我的示例代码，即使它们存在于集合中也不返回任何内容:
Here is my example code that doesn't return anything even though they exist in the collection:
$cursor = $products->find(
array(
'$or' => array(
"brand" => "anti-clothes",
"allSizes" => "small"
)
)
);
推荐答案
The $or operator lets you use boolean or in a query.
You give $or an array of expressions, any of which can satisfy the query.
您只提供了数组中的一个元素.使用:
You provided only one element in the array. Use:
find(array('$or' => array(
array("brand" => "anti-clothes"),
array("allSizes" => "small")
)));
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