MongoCollection::getIndexInfo

(PECL mongo >=0.9.0)

MongoCollection::getIndexInfoReturns information about indexes on this collection

Descrizione

public MongoCollection::getIndexInfo ( void ) : array

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

This function returns an array in which each element describes an index. Elements will contain the values name for the name of the index, ns for the namespace (a combination of the database and collection name), and key for a list of all fields in the index and their ordering. Additional values may be present for special indexes, such as unique or sparse.

Esempi

Example #1 MongoCollection::getIndexInfo() example

<?php

$m 
= new MongoClient();
$c $m->selectCollection('test''venues');
var_dump($c->getIndexInfo());

?>

Il precedente esempio visualizzerĂ  qualcosa simile a:

array(4) {
  [0]=>
  array(4) {
    ["v"]=>
    int(1)
    ["key"]=>
    array(1) {
      ["_id"]=>
      int(1)
    }
    ["name"]=>
    string(4) "_id_"
    ["ns"]=>
    string(11) "test.venues"
  }
  [1]=>
  array(4) {
    ["v"]=>
    int(1)
    ["key"]=>
    array(1) {
      ["name"]=>
      float(1)
    }
    ["name"]=>
    string(6) "name_1"
    ["ns"]=>
    string(11) "test.venues"
  }
  [2]=>
  array(4) {
    ["v"]=>
    int(1)
    ["key"]=>
    array(2) {
      ["type"]=>
      float(1)
      ["createdAt"]=>
      float(-1)
    }
    ["name"]=>
    string(19) "type_1_createdAt_-1"
    ["ns"]=>
    string(11) "test.venues"
  }
  [3]=>
  array(5) {
    ["v"]=>
    int(1)
    ["key"]=>
    array(1) {
      ["location"]=>
      string(8) "2dsphere"
    }
    ["name"]=>
    string(17) "location_2dsphere"
    ["ns"]=>
    string(11) "test.venues"
    ["2dsphereIndexVersion"]=>
    int(2)
  }
}

Vedere anche:

MongoDB core docs on » vanilla indexes and » geospatial indexes.

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User Contributed Notes 1 note

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1
nanhe dot kumar at gmail dot com
6 years ago
<?php
/*
    For example, to view all indexes on the people collection from country databse :
    InmongoDb
    use country
    db.people.getIndexes()
    Inphp

*/
$m = new MongoClient();
$indexes = $m->country->people->getIndexInfo();

?>
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