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Fix error Unsupported operand types: int + stringPHP
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@ -418,13 +418,8 @@ class calendar_category_report extends calendar_ui{
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foreach ($raw_csv as &$row)
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{
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$check_row = 0;
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foreach ($row as $val)
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{
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$check_row += $val;
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}
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//check if all values of the row is zero then escape the row
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if (!$check_row) continue;
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if (!array_sum($row)) continue;
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// printout each row into file
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fputcsv($fp, array_values($row));
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