function drupal_get_installed_schema_version

Returns the currently installed schema version for a module.

Parameters

string $module: A module name.

bool $reset: Set to TRUE after installing or uninstalling an extension.

bool $array: Set to TRUE if you want to get information about all modules in the system.

Return value

string|int The currently installed schema version, or SCHEMA_UNINSTALLED if the module is not installed.

Related topics

File

core/includes/schema.inc, line 78

Schema API handling functions.

Code

function drupal_get_installed_schema_version($module, $reset = FALSE, $array = FALSE) {
  $versions =& drupal_static(__FUNCTION__, []);
  if ($reset) {
    $versions = [];
  }
  if (!$versions) {
    if (!($versions = \Drupal::keyValue('system.schema')
      ->getAll())) {
      $versions = [];
    }
  }
  if ($array) {
    return $versions;
  }
  else {
    return isset($versions[$module]) ? $versions[$module] : SCHEMA_UNINSTALLED;
  }
}