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怎么防止刷新网页重复插入数据

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Release： 2016-05-25 16:53:27
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关于怎么防止刷新网页重复插入数据方法很多也很简单的，下面我们就来提供几种参考的处理方法吧。

如何防止刷新网页插入数据：

我做了一个留言板，但是每次刷新就会插入信息，请问怎么做才能防止刷新插入数据呢

JS每次操作后返回

<?php
$regs=mysql_query($shouruinsert,$conn); 
    if($regs) echo "<script>window.alert(\"操作成功\");</script><font size=3><a href=inout.htm>你的收入已经入库,请返回.不要刷新本页以免重复提交</a></font><script>window.location.href=&#39;inout.htm&#39;;</script>"; 
} 
else{ 
    echo "<script>window.alert(\"操作失败\");</script><font size=3><a href=inout.htm>请检查你提交的数据是否规范或者联系管理员!!</a></font>";
}
?>
Copy after login

可以在发表页生成个cookie，在提交页，如果提交成功了就把这个cookie清了，这个刷新的时候判断cookie是否存在就可以了

还有和种方法就是查询数据库之后直接判断， 

if($regs){ 
    die(&#39;is exisit&#39;); 
}else{ 
    mysql_..... 
}
Copy after login


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Related labels：
刷新网页 重复插入数据
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