MongoDB\MapReduceResult::getCounts()

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Definition

Return Values
Examples
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Definition

MongoDB\MapReduceResult::getCounts()

Returns count statistics for the map-reduce operation.

function getCounts(): array

Return Values

An array of count statistics for the map-reduce operation.

Examples

This example reports the count statistics for a map-reduce operation.

<?php
$collection = (new MongoDB\Client)->test->zips;
$map = new MongoDB\BSON\Javascript('function() { emit(this.state, this.pop); }');
$reduce = new MongoDB\BSON\Javascript('function(key, values) { return Array.sum(values) }');
$out = ['inline' => 1];
$result = $collection->mapReduce($map, $reduce, $out);
var_dump($result->getCounts());

The output would then resemble:

array(4) {
  ["input"]=>
  int(29353)
  ["emit"]=>
  int(29353)
  ["reduce"]=>
  int(180)
  ["output"]=>
  int(51)
}

Definition

Return Values

Examples

See Also