Mysql将我的日期列保存为0000-00-00？

问题描述

我已将除日期部分之外的所有记录插入不正确为0000-00-00。我的代码中有什么问题？

I have inserted all records except the date part which inserted incorrectly as 0000-00-00. What is the problem inside my code?

if(isset($_POST["submit"]))
    {

        $birthDay= $_POST["Birthday_Year"] . "-" . $_POST["Birthday_Month"] . "-" . $_POST["Birthday_day"];


        $sql="SELECT * FROM student WHERE stud_id=1";
        $result = mysqli_query($db,$sql)  or die("Error: ".mysqli_error($db));
        $row=mysqli_fetch_array($result,MYSQLI_ASSOC);
        if(mysqli_num_rows($result) == 1)
        {
            $msg = "Sorry...This Studnent ID is already exist...";
        }
        else
        {
            $query = mysqli_query($db, "INSERT INTO student (stud_fname, stud_lname, stud_gfname,stud_id,stud_gender,stud_dob,stud_dep,stud_year,stud_section)
            VALUES ('$fname', '$lname', '$gfname','$studid', '$gender', '$birthDay','$department', '$year', '$section')");
            if($query)
            {
                $msg = "Thank You! you are now registered.";
            }
        }
    }

推荐答案

在所有情况下，日期保存为0000-00-00表示MySQL得到无效值（包括根本没有值）。检查您的代码以确保它始终具有有效的日期格式。

In all cases date saved as 0000-00-00 means that MySQL got an invalid value (including no value at all). Check your code to make sure that it always has a valid value format for the date.

从：

为您的代码添加一些验证：

Add some validation to your code:

if (!empty($_POST["Birthday_Year"]) && !empty($_POST["Birthday_Month"]) && !empty($_POST["Birthday_day"]))
{
    // do stuff
} else 
{
    // validation error: some of the values are empty
}

PS：另一个问题是，您的代码对于某些，如果您让用户自己输入值，而不进行验证。

PS: Another problem is, that your code has a hole for some SQL injection attack, if you let user input the values on his own, without validation.

这篇关于Mysql将我的日期列保存为0000-00-00？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！