added region tags for connection timeout

Author: shubha-rajan

cloud_sql/mysql/pdo/src/app.php

@@ -62,12 +62,14 @@
         }
 
         // Connect to the database.
+        # [START cloud_sql_mysql_pdo_timeout]
         // Here we set the connection timeout to five seconds and ask PDO to
         // throw an exception if any errors occur.
         $conn = new PDO($dsn, $username, $password, [
             PDO::ATTR_TIMEOUT => 5,
             PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
         ]);
+        # [END cloud_sql_mysql_pdo_timeout]
         # [END cloud_sql_mysql_pdo_create]
     } catch (TypeError $e) {
         throw new RuntimeException(

cloud_sql/sqlserver/pdo/src/app.php

@@ -50,12 +50,14 @@
         $dsn = sprintf('sqlsrv:server=%s;Database=%s', $hostname, $dbName);
 
         // Connect to the database.
+        # [START cloud_sql_sqlserver_pdo_timeout]
         // Here we set the connection timeout to five seconds and ask PDO to
         // throw an exception if any errors occur.
         $conn = new PDO($dsn, $username, $password, [
             PDO::ATTR_TIMEOUT => 5,
             PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
         ]);
+        # [END cloud_sql_sqlserver_pdo_timeout]
         # [END cloud_sql_sqlserver_pdo_create]
     } catch (TypeError $e) {
         throw new RuntimeException(