MongoCollection::getIndexInfo

(PECL mongo >=0.9.0)

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

说明

public array MongoCollection::getIndexInfo ( void )

参数

此函数没有参数。

返回值

This function returns an array in which each elements describes an array. The elements contain the values name for the name of the index, ns for the namespace (the name of the collection), key containing a list of all the keys and their sort order that make up the index and _id containing a MongoID object with the ID of this index.

范例

Example #1 MongoCollection::find() example

This example demonstrates how to search for a range.


<?php

$m = new Mongo;
$c = $m->selectCollection('project', 'outfits');
var_dump($c->getIndexInfo());

?>

以上例程会输出：

array(8) {
  [0] =>
  array(3) {
    'name' =>
    string(4) '_id_'
    'ns' =>
    string(12) 'project.outfits'
    'key' =>
    array(1) {
      '_id' =>
      int(1)
    }
  }
...
  [7] =>
  array(4) {
    '_id' =>
    class MongoId#12 (1) {
      public $$id =>      string(24) '4d6f7abd44670a1513190000'
    }
    'ns' =>
    string(12) 'project.outfits'
    'key' =>
    array(2) {
      'created' =>
      int(-1)
      'userid' =>
      int(1)
    }
    'name' =>
    string(19) 'created_-1_userid_1'
  }
}

See MongoCursor for more information how to work with cursors.