SolrDocument::fieldExists(PECL solr >= 0.9.2) SolrDocument::fieldExists — Checks if a field exists in the document Описание
   public bool SolrDocument::fieldExists
    ( string $fieldName
   ) 
  Checks if the requested field as a valid fieldname in the document. Список параметров
 
 Возвращаемые значенияReturns TRUE if the field is present and FALSE if it does not.  | 
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