6 calls to Database::isActiveConnection()

mysqli_requirements in core/modules/mysqli/mysqli.install
Implements hook_requirements().
MysqlRequirements::runtime in core/modules/mysql/src/Hook/MysqlRequirements.php
Implements hook_runtime_requirements().
mysql_requirements in core/modules/mysql/mysql.install
Implements hook_requirements().
PgsqlRequirements::getRequirements in core/modules/pgsql/src/Install/Requirements/PgsqlRequirements.php
Check installation requirements.
PgsqlRequirementsHooks::checkRequirements in core/modules/pgsql/src/Hook/PgsqlRequirementsHooks.php
Implements hook_update_requirements().
Tasks::isConnectionActive in core/lib/Drupal/Core/Database/Install/Tasks.php
Determines if there is an active connection.

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