php如何对mongodb最近几日数据分组统计?例如统计近7日每天新增用户量。
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首先插入mongodb数据库中的字段为int时间戳格式,然后通过project转换成日期格式,示例代码如下:
<?php $manager = new MongoDB\Driver\Manager("mongodb://localhost:27017"); // 插入数据 $bulk = new MongoDB\Driver\BulkWrite; $bulk->insert(['x' => 2, 'name' => 'bfw', 'scores' => 123, 'atime' => time()-1000000]); $bulk->insert(['x' => 2, 'name' => 'google', 'scores' => 10, 'atime' => time()-200000]); $bulk->insert(['x' => 2, 'name' => 'baidu', 'scores' => 11, 'atime' => time()-1231123]); $bulk->insert(['x' => 2, 'name' => 'bfw', 'scores' => 200, 'atime' => time()]); $bulk->insert(['x' => 2, 'name' => 'bfw', 'scores' => 123, 'atime' => time()]); $bulk->insert(['x' => 2, 'name' => 'google', 'scores' => 10, 'atime' => time()]); $bulk->insert(['x' => 2, 'name' => 'baidu', 'scores' => 11, 'atime' => time()]); $bulk->insert(['x' => 2, 'name' => 'bfw', 'scores' => 200, 'atime' => time()]); $_data = $manager->executeBulkWrite('test.sites2', $bulk); $utcdatetime = new MongoDB\BSON\UTCDateTime(0); //1970.01.01 00:00:00 $repair_time = 3600000 * 8; //修复时差 $param = [ 'aggregate' => 'sites2', //表名 'pipeline' => [ [ //完整的format格式是%Y-%m-%d %H:%M:%S:%L '$project' => [ 'datetime' => ['$dateToString' => ['format' => "%Y-%m-%d", 'date' => ['$add' => [$utcdatetime, ['$multiply' => ['$atime', 1000]], $repair_time]]]], "x" => '$x' ]], ['$match' => ['x' => 2]], ['$group' => ['_id' => '$datetime', 'count' => ['$sum' => 1]]], ], 'cursor' => new \stdClass()// 高版本需要带上这个值 ]; //除了$sum外还有$max最大值 $min最小值 $avg平均值 $command = new \MongoDB\Driver\Command($param); $cursor = $manager->executeCommand('test', $command); foreach ($cursor as $document) { $document = objectToArray($document); print_r($document); } function objectToArray($object) { $result = array(); $object = is_object($object) ? get_object_vars($object) : $object; foreach ($object as $key => $val) { $val = (is_object($val) || is_array($val)) ? objectToArray($val) : $val; $result[$key] = $val; } return $result; }