title: oci_execute() error message
body: <p>I get the below error message. What other compression function(other than SHA1) should use for oracle?  <br>
  <strong>Warning: oci_execute() [function.oci-execute]: ORA-00904: "SHA1": invalid identifier in /user_auth_fns.php on line 2</strong></p>
  
  <pre><code>
  $result = oci_parse($conn, "select * from user where username='$username' and passwd = sha1('$password')");
  $r = oci_execute($result);
    if (!$r) {
     $error = oci_error($conn);
    echo "Could not log you in." . $error['message'];
    exit;
  </code></pre>