php mongodb聚合查询出现The 'cursor' option is required, except for aggregate with the explain argument

因为mongodb3.6版本以后pipeline必须传cursor参数，否则报The ‘cursor’ option is required, except for aggregate with the explain argument错误，解决方法： 引用： php mongodb聚合查询出现The ‘cursor’ option is required, except for aggregat

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