(PECL mongo >=0.9.0)
MongoCollection::getIndexInfo — Returns information about indexes on this collection
Diese Funktion besitzt keine Parameter.
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.
Beispiel #1 MongoCollection::getIndexInfo() example
<?php
$m = new MongoClient();
$c = $m->selectCollection('test', 'venues');
var_dump($c->getIndexInfo());
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
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)
}
}
MongoDB core docs on » vanilla indexes and » geospatial indexes.