can someone help me with a pageviews counter php & mysql please?

can someone help me I have a little problem so…my problem is :
I created a page views counter but I do not know how to limit based on ip,because when i refresh the page the page view grows . my db table look like this:

<!—This is pageviews table–called (pagine)-!>
| id |
| pageid |
| pagename |
| views |
| ip |

and here is my code :->

<?php

if (isset($_GET[“id”])) {
$id = $_GET[“id”];
}
mysql_select_db($database_filminitaliano, $filminitaliano);

$query_lista_pagine = sprintf(“UPDATE pagine SET views = views+1 WHERE pagine.pageid = %s” , GetSQLValueString($id, “int”) );
$lista_pagine = mysql_query($query_lista_pagine, $filminitaliano) or die(mysql_error());
$query_Lista_pagine = sprintf(“SELECT * FROM pagine WHERE pagine.pageid = %s ” , GetSQLValueString($id, “int”));
$lista_pagine = mysql_query($query_Lista_pagine, $filminitaliano) or die(mysql_error());
$Row_Lista_pagine = mysql_fetch_assoc($lista_pagine);
$TotalRows_Lista_pagine = mysql_num_rows($lista_pagine);
//finiamto!
?>

Can sombody give me a hand please tnks

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