Mysql Stored Procedure Error (mysqli version)

echo "<h1>Running test_procedure_1</h2>";
echo "<pre>";
echo "CREATE PROCEDURE `test_procedure_1`()".
"BEGIN".
"   select 'gary';".
"   CALL raise_error;".
"END";
echo "</pre>";
//connect to database
$connection = new mysqli($db['server'], $db['user'], $db['password'], $db['name']);

if (!($result = $connection->query("CALL test_procedure_1"))) {
    echo "CALL failed: (" . $connection->errno . ") " . $connection->error;
}
else{
    //loop the result set
    echo "RESULTS:";
    while ($row = $result->fetch_assoc()){
        print_r($row);
    }
}


echo "<br>----------<br>";
echo "<h1>Running test_procedure_2</h2>";
echo "<pre>";
echo "CREATE PROCEDURE `test_procedure_2`()".
"BEGIN".
"   CALL raise_error;".
"   select 'gary';".
"END";
echo "</pre>";
$connection = new mysqli($db['server'], $db['user'], $db['password'], $db['name']);

if (!($result2 = $connection->query("CALL test_procedure_2"))) {
    echo "CALL failed: (" . $connection->errno . ") " . $connection->error;
}
else{
    //loop the result set
    echo "RESULTS:";
    while ($row = $result2->fetch_assoc()){
        print_r($row);
    }
}