==================================MongoDB\\Model\\IndexInfo::isTtl()==================================.. default-domain:: mongodb.. contents:: On this page :local: :backlinks: none :depth: 1 :class: singlecolDefinition----------.. phpmethod:: MongoDB\\Model\\IndexInfo::isTtl() Return whether the index is a :manual:`TTL index </core/index-ttl>`. This correlates with the ``expireAfterSeconds`` option for :phpmethod:`MongoDB\\Collection::createIndex()`. .. code-block:: php function isTtl(): booleanReturn Values-------------A boolean indicating whether the index is a TTL index.See Also--------- :phpmethod:`MongoDB\\Collection::createIndex()`- :manual:`listIndexes </reference/command/listIndexes>` command reference in the MongoDB manual- :manual:`TTL Indexes </core/index-ttl>` in the MongoDB manual