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# fann_create_train_from_callback

(PECL fann >= 1.0.0)

fann_create_train_from_callback — Creates the training data struct from a user supplied function

### Description

resource fann_create_train_from_callback ( int `$num_data` , int `$num_input` , int `$num_output` , collable `$user_function` )

Creates the training data struct from a user supplied function. As the training data are numerable (data 1, data 2...), the user must write a function that receives the number of the training data set (input, output) and returns the set.

### Liste de paramètres

`num_data`

  The number of training data

`num_input`

  The number of inputs per training data

`num_output`

  The number of ouputs per training data

`user_function`

  The user supplied function with following parameters:

  - num - The number of the training data set
  - num_input - The number of inputs per training data
  - num - The number of ouputs per training dataThe number of inputs per training data

  The function should return an associative array with keys input and output and two array values of input and output.

### Valeurs de retour

Retourne une ressource de données d'entrainement en cas de succès, ou `FALSE` si une erreur survient.

### Exemples

Exemple #1 fann_create_train_from_callback() example

`<?php
function create_train_callback($num_data, $num_input, $num_output) {
return array(
"input" => array_fill(0, $num_input, 1),
"output" => array_fill(0, $num_output, 1),
);
}
$num_data = 3;
$num_input = 2;
$num_output = 1;
$train_data = fann_create_train_from_callback($num_data, $num_input, $num_output, "create_train_callback");
if ($train_data) {
// Do something with $train_data
}
?>`

### Voir aussi

- fann_read_train_from_file() - Reads a file that stores training data
- fann_train_on_data() - Trains on an entire dataset for a period of time
- fann_destroy_train() - Destructs the training data
- fann_save_train() - Save the training structure to a file

fann_create_standard
fann_create_train
Fann Fonctions
PHP Manual