MongoCollection::getIndexInfo

(PECL mongo >=0.9.0)

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

说明

public MongoCollection::getIndexInfo ( void ) : array

参数

此函数没有参数。

返回值

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.

范例

Example #1 MongoCollection::getIndexInfo() example


<?php

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

?>

以上例程的输出类似于：

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)
  }
}

参见

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

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User Contributed Notes 1 note

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nanhe dot kumar at gmail dot com ¶

5 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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官方地址：https://www.php.net/manual/en/mongocollection.getindexinfo.php

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MongoCollection::getIndexInfo

说明

参数

返回值

范例

参见

User Contributed Notes 1 note