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Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
(PECL solr >= 2.2.0)
SolrCollapseFunction::setNullPolicy — Sets the NULL Policy
$nullPolicy
)Sets the NULL Policy. One of the 3 policies defined as class constants shall be passed. Accepts ignore, expand, or collapse policies.
nullPolicy
SolrCollapseFunction