private function trainSamples(array $samples, array $targets, float $desiredError) : int
{
$resultsWithinError = 0;
foreach ($targets as $key => $target) {
$result = $this->network->setInput($samples[$key])->getOutput();
if ($this->isResultWithinError($result, $target, $desiredError)) {
++$resultsWithinError;
} else {
$this->trainSample($samples[$key], $target);
}
}
return $resultsWithinError;
}