function transfert_image($fichier_image,$nom_image)
{
global $site_url_absolue,$img_dossier_url;
if(!empty($fichier_image))
{
$nom_image=stripslashes($nom_image);
 
// Ici ça sert à renommer l'image mais pas obligatoire :)
$date = (date ("dmy" ));  // format looks like 121700 - Month, Day, Year
$time = (date ("His" ));    // format looks like 214521 - Hours, Minutes Seconds
 
$file_ext = strtoupper(substr($nom_image, strrpos($nom_image, "." ) + 1));  
$file_ext = strtolower($file_ext);
 
if (! copy ($fichier_image, $site_url_absolue.$img_dossier_url."/".$date.$time.".".$file_ext))  
{
alerte("Impossible d'uploader l'image $nom_image dans $site_url_absolue$img_dossier_url" );
}
else
{
unlink ($fichier_image);
}
 
$img_final=$date.$time.$inc.".".$file_ext;
unset ($file_ext);
 }
else{
$img_final='';
}
return $img_final;
}

<?
include "../include/config.inc.php";
require "../include/fonctions.inc.php";
 
if($action=="ajouter" )
{
if($image!="" )
   {
   $img=transfert_image($image,$image_name);
   }
}
 
//...//
 
<FORM enctype=multipart/form-data ACTION="tonsript.php" METHOD="POST">
<input type="file" name="image">  
<input type="submit" name="Submit" value="Valider">
<input type="hidden" name="action" value="ajouter">
</form>