# fdf_get_file

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

fdf_get_file — Get the value of the /F key

### 说明

fdf_get_file(resource `$fdf_document`): string

Gets the value of the `/F` key.

### 参数

`fdf_document`
  The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().

### 返回值

Returns the key value, as a string.

### 参见

- fdf_set_file() - Set PDF document to display FDF data in

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