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@@ -99,12 +99,17 @@ switch ($action) {
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}
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if (!empty($_GET['class'])) {
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+ $class = (int) $_GET['class'];
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$result = Database::query(
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"DELETE FROM $tbl_session_rel_class
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- WHERE session_id='$sessionId' AND class_id=".intval($_GET['class'])
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+ WHERE session_id = $sessionId
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+ AND class_id = $class"
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);
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$nbr_affected_rows = Database::affected_rows($result);
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- Database::query("UPDATE $tbl_session SET nbr_classes=nbr_classes-$nbr_affected_rows WHERE id='$sessionId'");
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+ Database::query(
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+ "UPDATE $tbl_session
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+ SET nbr_classes = nbr_classes - $nbr_affected_rows
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+ WHERE id = $sessionId");
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}
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if (!empty($_GET['user'])) {
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