Oracle with Php connection

<?php
$connection = oci_connect("root", "kosm");
if(!$connection) echo "error connect";

$query = "SELECT * FROM group_member";

$statement = oci_parse ($connection, $query);
oci_execute ($statement);

while ($row = oci_fetch_array ($statement, OCI_BOTH))
{
    echo $row['GROUPID']."<br>";
    echo $row['GROUPNAME']."<br>";
    echo $row['GROUPTYPE']."<br>";
}
echo "WOWWW2";
//print_r($row);

?>