/**
* Validate a CSRF token
*
* @param string $value Token
*
* @return boolean
*/
public function validate($value)
{
$tokens = $this->app->session()->get($this->sessionKey, array());
$key = array_search($value, $tokens);
if ($key !== false) {
unset($tokens[$key]);
$this->app->session()->set($this->sessionKey, $tokens);
return true;
}
return false;
}