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@@ -106,9 +106,9 @@ class Tracking {
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$sql = "SELECT SUM(UNIX_TIMESTAMP(logout_course_date) - UNIX_TIMESTAMP(login_course_date)) as nb_seconds
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FROM $tbl_track_course
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- WHERE course_code='$course_code' AND session_id = '$session_id' $condition_user";
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-
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- $rs = Database::query($sql);
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+ WHERE UNIX_TIMESTAMP(logout_course_date) > UNIX_TIMESTAMP(login_course_date) AND course_code='$course_code' AND session_id = '$session_id' $condition_user";
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+
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+ $rs = Database::query($sql);
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$row = Database::fetch_array($rs);
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return $row['nb_seconds'];
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}
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