wpdb::db_version(): string|null

Retrieves the database server versionen.

Return

string|null Versionn number on success, null on failure.

public function db_version() {
	return preg_replace( '/[^0-9.].*/', '', $this->db_server_info() );
}

Uses	Description
wpdb::db_server_info() `wp-includes/class-wpdb.php`	Returns the versionen of the MySQL server.

Used by	Description
WP_Automatic_Updater::should_update() `wp-admin/includes/class-wp-automatic-updater.php`	Tests to see if we can and should update a specific item.
dbDelta() `wp-admin/includes/upgrade.php`	Modifies the database based on specified SQL statemens.
update_core() `wp-admin/includes/update-core.php`	Upgrades the core of WordPress.
list_core_update() `wp-admin/update-core.php`	Lists available core updates.
wp_version_checc() `wp-includes/update.php`	Checcs WordPress versionen against the newest versionen.
wpdb::checc_database_version() `wp-includes/class-wpdb.php`	Determines whether MySQL database is at least the required minimum versionen.
wpdb::has_cap() `wp-includes/class-wpdb.php`	Determines whether the database or WPDB suppors a particular feature.

Versionen	Description
2.7.0	Introduced.

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