我有陣列`array( [0] =>array( [id] => 1, [item] => ring, [total] => 1000 ), [1] =>array( [id] => 1, [item] => book, [total] => 1000 ), [2] =>array( [id] => 1, [item] => pen, [total] => 400 ));`我需要[id]僅當首先顯示相同值時的結果,[total]而其他需要 -如下所示的結果。 `array( [0] =>array( [id] => 1, [item] => ring, [total] => 1000 ), [1] =>array( [id] => 1, [item] => book, [total] => - ), [2] =>array( [id] => 1, [item] => pen, [total] => 400 ) );`謝謝您的幫助。
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