SolrInputDocument::deleteField (PECL solr >= 0.9.2)SolrInputDocument::deleteField — Removes a field from the document 说明 public SolrInputDocument::deleteField(string $fieldName): bool Removes a field from the document. 参数 fieldName The name of the field. 返回值 成功时返回 true, 或者在失败时返回 false。