# fdf_get_value

(PHP 4, PHP 5, PHP 7)

fdf_get_value — Get the value of a field

### 说明

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

Gets the value for the requested field.

### 参数

`fdf_document`

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

`fieldname`

  Name of the FDF field, as a string.

`which`

  Elements of an array field can be retrieved by passing this optional parameter, starting at zero. For non-array fields, this parameter will be ignored.

### 返回值

Returns the field value.

### 更新日志

版本 | 说明
--- | ---
4.3.0 | Support for arrays and the `which` parameter were added.

### 参见

- fdf_set_value() - Set the value of a field