Returns information about indexes on this collection

# MongoCollection::getIndexInfo

(PECL mongo >=0.9.0)

MongoCollection::getIndexInfo — Returns information about indexes on this collection

### Descrierea

public MongoCollection::getIndexInfo ( void ) : array

### Parametri

Această funcție nu are parametri.

### Valorile întoarse

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.

### Exemple

Example #1 MongoCollection::getIndexInfo() example

`<?php
$m = new MongoClient();
$c = $m->selectCollection('test', 'venues');
var_dump($c->getIndexInfo());
?>`

Exemplul de mai sus va afișa ceva similar cu:

    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)
      }
    }

### A se vedea și

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