function drupal_get_installed_schema_version

Same name in other branches
  1. 9 core/includes/schema.inc \drupal_get_installed_schema_version()
  2. 8.9.x core/includes/schema.inc \drupal_get_installed_schema_version()

Returns the currently installed schema version for a module.

Parameters

$module: A module name.

$reset: Set to TRUE after modifying the system table.

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

Return value

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

16 calls to drupal_get_installed_schema_version()
drupal_load_updates in includes/install.inc
Loads .install files for installed modules to initialize the update system.
drupal_set_installed_schema_version in includes/install.inc
Update the installed version information for a module.
drupal_uninstall_modules in includes/install.inc
Uninstalls a given list of disabled modules.
ModuleUnitTest::testDependencyResolution in modules/simpletest/tests/module.test
Test dependency resolution.
module_enable in includes/module.inc
Enables or installs a given list of modules.

... See full list

File

includes/install.inc, line 146

Code

function drupal_get_installed_schema_version($module, $reset = FALSE, $array = FALSE) {
    static $versions = array();
    if ($reset) {
        $versions = array();
    }
    if (!$versions) {
        $versions = array();
        $result = db_query("SELECT name, schema_version FROM {system} WHERE type = :type", array(
            ':type' => 'module',
        ));
        foreach ($result as $row) {
            $versions[$row->name] = $row->schema_version;
        }
    }
    if ($array) {
        return $versions;
    }
    else {
        return isset($versions[$module]) ? $versions[$module] : SCHEMA_UNINSTALLED;
    }
}

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