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