= 0.9.2)SolrDocument::offsetExists — Checks if a particular field exists說明public SolrDocument::offsetExists(stri">

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SolrDocument::offsetExists

(PECL solr >= 0.9.2)

SolrDocument::offsetExists — Checks if a particular field exists

public SolrDocument::offsetExists(string $fieldName): bool

Checks if a particular field exists. This is used when the object is treated as an array.

成功時返回 true，或者在失敗時返回 false。