<script language="php">

# for linux    
#    $imageRoot = "/home/httpd/html/mrsid/mrsid_images/sample";
#    $binRoot = "/home/httpd/html/mrsid/bin";
#    exec("$binRoot/mrsid_retrieve -quiet -i $file -o d:/temp/out.jpg -icon");

# for windows
    $imageRoot = "d:/inetpub/wwwroot/sid/sample";
    $binRoot = "d:/inetpub/wwwroot/sid/bin";

    $file = "$imageRoot/aerial.sid";

# exec-ing any command fails with 'could not fork'  backticks, and system do the same
    exec("$binRoot/mrsid_extract -i $file -o d:/temp/out.jpg -icon");
    
    $fp = fopen("d:/temp/out.jpg", "rb");
    Header ("Content-Type: image/jpeg");
    fpassthru($fp);
    
</script>