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MongoDB\MapReduceResult::getTiming()

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MongoDB\\MapReduceResult::getTiming()

Returns timing statistics for the map-reduce operation.

function getTiming(): array

Timing statistics will only be available if the verbose option was specified for MongoDB\\Collection::mapReduce().

An array of timing statistics for the map-reduce operation. If no timing statistics are available, the array will be empty.

This example specifies the verbose option for MongoDB\\Collection::mapReduce() and reports the timing 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, $out, ['verbose' => true]);
var_dump($result->getTiming());

The output would then resemble:

array(5) {
["mapTime"]=>
int(163)
["emitLoop"]=>
int(233)
["reduceTime"]=>
int(9)
["mode"]=>
string(5) "mixed"
["total"]=>
int(233)
}
  • MongoDB\\Collection::mapReduce()

  • mapReduce command reference in the MongoDB manual

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