fdf_get_value

(PHP 4, PHP 5 < 5.3.0, PECL fdf SVN)

fdf_get_valueObtém o valor de um campo

Descrição

fdf_get_value(resource $fdf_document, string $fieldname, int $which = -1): mixed

Obtém o valor do campo solicitado.

Parâmetros

fdf_document

O identificador do documento FDF, retornado por fdf_create(), fdf_open() ou fdf_open_string().

fieldname

Nome do campo FDF, como uma string.

which

Elementos de um campo array podem ser recuperados passando este parâmetro opcional, começando em zero. Para campos não array, este parâmetro será ignorado.

Valor Retornado

Retorna o valor do campo.

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Notas Enviadas por Usuários (em inglês) 1 note

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mclinden at informed dot net
22 years ago
(i filed a bug report/feature request for this on bugs.php.net and assigned it to myself hartmut@php.net)

The default behavior for the FDF Toolkit is to return an FDFErcNoValue for the FDFGetValue when the field exists but has no value.

Whether or not this is truly an error is debateable. It seems to become an issue in documents created by Acrobat 5 when optional fields are included in a form with required fields since the default behavior seems to be to populate the HTTP_FDF_DATA with the results of the FDFNextFieldName enumerator, which would include the fields which have no value.

This would not be a problem except that the PHP function fdf_get_value() does not specifically test for the FDFErcNoValue condition but, instead, tests for the more general FDFErcOK. If this value is not the result of the error code, the system issues warnings (the display of which could be turned off), but the broader question is, should this be a warning condition at all?

Put another way, should a return of FDFErcNoValue for FDFGetValue be considered an event worth generating a warning?
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