fdf_get_value
说明
mixed fdf_get_value ( resource fdf_document, string fieldname [, int which] )Gets the value for the requested field.
参数
fdf_documentThe FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().
fieldnameName of the FDF field, as a string.
whichElements of an array field can be retrieved by passing this optional parameter, starting at zero. For non-array fields, this parameter will be ignored.