SolrDocument::fieldExists()
(PECL solr >= 0.9.2)
Checks if a field exists in the document
说明
public SolrDocument::fieldExists(string $fieldName): bool
Checks if the requested field as a valid fieldname in the document.
参数
- $fieldName
The name of the field.
返回值
Returns TRUE
if the field is present and FALSE
if it does not.