function UserAuthentication::authenticate
Validates user authentication credentials.
Parameters
string $username: The user name to authenticate.
string $password: A plain-text password, such as trimmed text from form values.
Return value
int|false The user's uid on success, or FALSE on failure to authenticate.
Overrides UserAuthInterface::authenticate
File
- 
              core/modules/ user/ src/ UserAuthentication.php, line 43 
Class
- UserAuthentication
- Validates user authentication credentials.
Namespace
Drupal\userCode
public function authenticate($username, #[\SensitiveParameter] $password) {
  @trigger_error(__METHOD__ . ' is deprecated in drupal:10.3.0 and will be removed from drupal:12.0.0. Implement \\Drupal\\user\\UserAuthenticationInterface instead. See https://www.drupal.org/node/3411040');
  $uid = FALSE;
  if (!empty($username) && strlen($password) > 0) {
    $account_search = $this->entityTypeManager
      ->getStorage('user')
      ->loadByProperties([
      'name' => $username,
    ]);
    if ($account = reset($account_search)) {
      if ($this->authenticateAccount($account, $password)) {
        $uid = $account->id();
      }
    }
  }
  return $uid;
}Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.
