Php/docs/mongocollection.getindexinfo
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MongoCollection::getIndexInfo
(PECL mongo >=0.9.0)
MongoCollection::getIndexInfo — Returns information about indexes on this collection
说明
public MongoCollection::getIndexInfo ( ) : 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) } }