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# SolrDocument::offsetExists

(PECL solr >= 0.9.2)

SolrDocument::offsetExists — Checks if a particular field exists

### 説明

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

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

### パラメータ

`fieldName`

  The name of the field.

### 返り値

成功した場合に `TRUE` を、失敗した場合に `FALSE` を返します。

SolrDocument::next
SolrDocument::offsetGet
SolrDocument
PHP Manual