function drupal_get_schema_versions

7.x install.inc	`drupal_get_schema_versions($module)`
6.x install.inc	`drupal_get_schema_versions($module)`

Returns an array of available schema versions for a module.

Parameters

$module: A module name.

Return value

If the module has updates, an array of available updates sorted by version. Otherwise, FALSE.

5 calls to drupal_get_schema_versions()

drupal_install_system in drupal-6.x/includes/install.inc: Callback to install the system module.
system_requirements in drupal-6.x/modules/system/system.install: Implementation of hook_requirements().
update_batch in drupal-6.x/update.php
update_script_selection_form in drupal-6.x/update.php
_drupal_install_module in drupal-6.x/includes/install.inc: Callback to install an individual profile module.

File

drupal-6.x/includes/install.inc, line 40

Code

function drupal_get_schema_versions($module) {
  $updates = array();
  $functions = get_defined_functions();
  foreach ($functions['user'] as $function) {
    if (strpos($function, $module . '_update_') === 0) {
      $version = substr($function, strlen($module . '_update_'));
      if (is_numeric($version)) {
        $updates[] = $version;
      }
    }
  }
  if (count($updates) == 0) {
    return FALSE;
  }
  sort($updates, SORT_NUMERIC);
  return $updates;
}