SolrDocument::offsetExists()
(PECL solr >= 0.9.2)
Checks if a particular field exists
说明
public SolrDocument::offsetExists(string $fieldName): bool
Checks if a particular field exists. This is used when the object is treated as an array.
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
。