Oracle database connection from PHP language

oracle-php-connection.php

<?php
  echo 'Oracle connection test<br/>';

  $db = "(DESCRIPTION=(ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521)))(CONNECT_DATA=(SERVICE_NAME=orcl.olivum.local)))" ;

  if ($connection = OCILogon("userweb", "passcode", $db)) {
    echo "Successfully connected to Oracle.<br/>";
  }
  else {
      $err = OCIError();

      echo "Connection failed.". $err[text];

      return;
  }

  $query = "SELECT * FROM product";

  echo 'Query: ', $query, '<br/>';

  $result = oci_parse($connection, $query);

  oci_execute($result);

  echo 'Records:<br/>';

  while ($row = oci_fetch_array($result, OCI_ASSOC)) {
      #var_dump($row);
      echo 'ID=', $row['NAME'], ', NAME=', $row['NAME'], '<br/>';
  }

  OCILogoff($connection);
?>