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Ce document utilise Manuel du site Web PHP chinois Libérer
(PECL solr >= 0.9.2)
SolrDocument::offsetExists — Checks if a particular field exists
$fieldName
)Checks if a particular field exists. This is used when the object is treated as an array.
fieldName
The name of the field.
成功时返回 TRUE
, 或者在失败时返回 FALSE
。