(PHP 4 >= 4.3.0, PHP 5, PHP 7)
fdf_error — Return error description for FDF error code
$error_code = -1
  ] )
   Gets a textual description for the FDF error code given in
   error_code.
  
error_codeAn error code obtained with fdf_errno(). If not provided, this function uses the internal error code set by the last operation.
Returns the error message as a string, or the string no error if nothing went wrong.