Checks if a field exists in the document

# SolrDocument::fieldExists

(PECL solr >= 0.9.2)

SolrDocument::fieldExists — Checks if a field exists in the document

### Descrierea

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

Checks if the requested field as a valid fieldname in the document.

### Parametri

`fieldName`

  The name of the field.

### Valorile întoarse

Returns `TRUE` if the field is present and `FALSE` if it does not.