root/tests/odbc-display.php

<?php
  if(($conn = odbc_connect($dsn, $dbuser, $dbpwd))){
        if(($res = odbc_do($conn, "select gif from php_test where id='$id'"))){
                odbc_binmode($res, 0);
                odbc_longreadlen($res, 0);
                if(odbc_fetch_row($res)){
                        header("content-type: image/gif");
                        odbc_result($res, 1);
                        exit;
                }else{
                        echo "Error in odbc_fetch_row";
                }
        } else {
                echo "Error in odbc_do";
        }
  } else {
        echo "Error in odbc_connect";
  }
?>