Sets the error function used during training

# fann_set_train_error_function

(PECL fann >= 1.0.0)

fann_set_train_error_function — Sets the error function used during training

### Description

fann_set_train_error_function(resource `$ann`, int `$error_function`): bool

Sets the error function used during training.

The error functions are described further in error functions constants.

### Parameters

`ann`

  Neural network resource.

`error_function`

  The error function constant

### Return Values

Returns `true` on success, or `false` otherwise.

### See Also

- fann_get_train_error_function() - Returns the error function used during training

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