(PECL fann >= 1.0.0)
fann_set_train_error_function — Sets the error function used during training
$ann
   , int $error_function
   )Sets the error function used during training.
The error functions are described further in error functions constants.
annРесурс (resource) нейронной сети.
error_functionThe error function constant
Возвращает TRUE в случае успешного выполнения, или FALSE в противном случае.