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<?php $from_line_no = 5; $to_line_no = 10; $match[1] = 5; $match[4] = 10; assert('$match[1] - $from_line_no == $match[4] - $to_line_no'); assert($match[1] - $from_line_no == $match[4] - $to_line_no); $match[1] = 6; $match[4] = 11; assert('$match[1] - $from_line_no == $match[4] - $to_line_no'); assert($match[1] - $from_line_no == $match[4] - $to_line_no);
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