public function validate(FormInterface $form)
{
if (!$form->isSynchronized()) {
$form->addError(new FormError('The value is invalid'));
}
if (count($form->getExtraData()) > 0) {
$form->addError(new FormError('This form should not contain extra fields'));
}
if ($form->isRoot() && isset($_SERVER['CONTENT_LENGTH'])) {
$length = (int) $_SERVER['CONTENT_LENGTH'];
$max = trim(ini_get('post_max_size'));
switch (strtolower(substr($max, -1))) {
// The 'G' modifier is available since PHP 5.1.0
case 'g':
$max *= 1024;
case 'm':
$max *= 1024;
case 'k':
$max *= 1024;
}
if ($length > $max) {
$form->addError(new FormError('The uploaded file was too large. Please try to upload a smaller file'));
}
}
}
