Converts keys specifying an index to its identifying string


(PECL mongo >=0.9.0)

MongoCollection::toIndexStringConverts keys specifying an index to its identifying string

Описание

static protected string MongoCollection::toIndexString ( mixed $keys )
Внимание

This method is deprecated since version 1.5.0.

Список параметров

keys

Field or fields to convert to the identifying string

Возвращаемые значения

Returns a string that describes the index.

Примеры

Пример #1 MongoCollection::toIndexString() example

This example shows how you can create an index name out of keys. Because this is a protected (static) method, you need to overload it in a child class first.

<?php
// Create inherited class to make the method "public".
class MyCollection extends MongoCollection
{
    static public function 
toIndexString($a)
    {
        return 
parent::toIndexString($a);
    }
}

echo 
MyCollection::toIndexString("foo"), "\n";
// Outputs: foo_1

echo MyCollection::toIndexString(array('name' => 1'age' => -1)), "\n";
// Outputs: name_1_age_-1
?>

Смотрите также

MongoDB core docs on » indexes.

Список изменений

Версия Описание
1.5.0 This method has been deprecated.