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@@ -23,9 +23,9 @@ if (empty($id_session)) {
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api_not_allowed();
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}
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-$page = intval($_GET['page']);
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-$action = $_REQUEST['action'];
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-$sort = in_array($_GET['sort'], array('title', 'nbr_users')) ? $_GET['sort'] : 'title';
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+$page = isset($_GET['page']) ? intval($_GET['page']) : 0;
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+$action = isset($_REQUEST['action']) ? $_REQUEST['action'] : '';
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+$sort = isset($_GET['sort']) && in_array($_GET['sort'], array('title', 'nbr_users')) ? $_GET['sort'] : 'title';
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$result = Database::query("SELECT name FROM $tbl_session WHERE id='$id_session'");
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