SolrDocument::getFieldNames
(PECL solr >= 0.9.2)
SolrDocument::getFieldNames — Returns an array of fields names in the document
Description
public SolrDocument::getFieldNames ( ) : array
Returns an array of fields names in the document.
Parameters
This function has no parameters.
Return Values
Returns an array containing the names of the fields in this document.
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https://www.php.net/manual/en/solrdocument.getfieldnames.php