test.php

<?php

for(;;){
    usleep(20000); // 20 ms
    $db = new PDO('mysql:host=slave;dbname=Magento;charset=utf8', 'dev_user1', 'XXXXXX', array(PDO::ATTR_EMULATE_PREPARES => false,
                                                                                                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));
    try {
	//connect as appropriate as above
    	$db->query('SET NAMES utf8');
        } catch(PDOException $ex) {
        echo "An Error occured:";
        echo $ex->getMessage()."\n\n";
    }
  $db = null; // close conn
  // echo ".";
}
?>