Db: add set_autocommit() method

src/Db.php

@@ -103,6 +103,16 @@ class Db {
     Log :: debug($msg);
   }
 
+  /**
+   * Set autocommit (only available on OCI, Firebird or MySQL connection)
+   * @param bool $value
+   * @see https://www.php.net/manual/en/pdo.setattribute.php
+   * @return void
+   */
+  public function set_autocommit($value) {
+    $this -> pdo -> setAttribute(PDO::ATTR_AUTOCOMMIT, $value);
+  }
+
   /*
    * Handle date/datetime format
    */