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(PECL solr >= 0.9.2)
SolrInputDocument::merge — Merges one input document into another
$sourceDoc
[, bool $overwrite
= true
] )Merges one input document into another.
sourceDoc
The source document.
overwrite
If this is TRUE
it will replace matching fields in the destination document.
成功时返回 TRUE
, 或者在失败时返回 FALSE
。 In the future, this will be modified to return the number of fields in the new document.