function drupal_get_schema_versions in Zircon Profile 8
Same name and namespace in other branches
- 8.0 core/includes/schema.inc \drupal_get_schema_versions()
Returns an array of available schema versions for a module.
Parameters
string $module: A module name.
Return value
array|bool If the module has updates, an array of available updates sorted by version. Otherwise, FALSE.
Related topics
5 calls to drupal_get_schema_versions()
- Module::getSchemaUpdates in core/
lib/ Drupal/ Core/ Updater/ Module.php - Returns available database schema updates once a new version is installed.
- ModuleInstaller::install in core/
lib/ Drupal/ Core/ Extension/ ModuleInstaller.php - Installs a given list of modules.
- system_requirements in core/
modules/ system/ system.install - Implements hook_requirements().
- update_get_update_function_list in core/
includes/ update.inc - Returns an organized list of update functions for a set of modules.
- update_get_update_list in core/
includes/ update.inc - Returns a list of all the pending database updates.
File
- core/
includes/ schema.inc, line 28 - Schema API handling functions.
Code
function drupal_get_schema_versions($module) {
$updates =& drupal_static(__FUNCTION__, NULL);
if (!isset($updates[$module])) {
$updates = array();
foreach (\Drupal::moduleHandler()
->getModuleList() as $loaded_module => $filename) {
$updates[$loaded_module] = array();
}
// Prepare regular expression to match all possible defined hook_update_N().
$regexp = '/^(?<module>.+)_update_(?<version>\\d+)$/';
$functions = get_defined_functions();
// Narrow this down to functions ending with an integer, since all
// hook_update_N() functions end this way, and there are other
// possible functions which match '_update_'. We use preg_grep() here
// instead of foreaching through all defined functions, since the loop
// through all PHP functions can take significant page execution time
// and this function is called on every administrative page via
// system_requirements().
foreach (preg_grep('/_\\d+$/', $functions['user']) as $function) {
// If this function is a module update function, add it to the list of
// module updates.
if (preg_match($regexp, $function, $matches)) {
$updates[$matches['module']][] = $matches['version'];
}
}
// Ensure that updates are applied in numerical order.
foreach ($updates as &$module_updates) {
sort($module_updates, SORT_NUMERIC);
}
}
return empty($updates[$module]) ? FALSE : $updates[$module];
}