??mysql??????в??????????????
???????????? ???????[ 2016/12/5 10:49:35 ] ????????MySQL ?????
????1.????????
????$sql1="insert into content(category??subject??content??username??release_date) values('{$category}'??'{ $subject}'??'{$content}'??'{$user}'??'{$date}')";
????//????????в???????????
????$res1=dml($sql1);
????2.???????
??????1??????????????????д????????
??????2???????????????????????var_dump($xxx)??????????????????????????
??????3???????????NULL??Σ????????desc table_name???????????????????? not null ????????????????????2????????????????????????????????
??????
???·???
??????????????????
2023/3/23 14:23:39???д?ò??????????
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2021/5/28 17:25:47??????APP??????????
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