MySQL时间戳插入可以，但有时会失败

Question

So I've got a bootstrap 3 form and there are a clockpicker and a datepicker plugins in it. I get all the data through PHP and try to insert into MySQL (currently in XAMPP). Sometimes the INSERT is okay, but sometimes one or both of the Timestamp fields in the DB are left at 0000....

Since I display the date like 17/09/2016 but I try to save it like 2016-17-09 in MySQL and I have to concatenate the text from the clockpicker to the text from the date picker, I do that:

    $startDate = $_POST['shiftStartDate'] . " " . $_POST['shiftStartTime'];
$startDateFormat = str_replace('/', '-', $startDate);
$date1 = date_create($startDateFormat);
$dateTime1 = date_format($date1, 'Y-d-m H:i:s');



$endDate = $_POST['shiftEndDate'] . " " . $_POST['shiftEndTime'];
$endDateFormat = str_replace('/', '-', $endDate);
$date2 = date_create($endDateFormat);
$dateTime2 = date_format($date2, 'Y-d-m H:i:s');

Any ideas?

SOLUTION : When formatting, conform to MySQL's requirement of Ymd, NOT Ydm:

$dateTime2 = date_format($date2, 'Y-m-d H:i:s');

Answer 1

MYSQL expects the date format to be YYYY-MM-DD HH:MM:SS when you save it to the database in a DATETIME or TIMESTAMP column datatype

You are trying to save it as YYYY-DD-MM. That will only work if the DD is less than 12 so that probably explains why it sometimes works and sometimes does not

So format your dates correctly to what MYSQL expects and all will be well.

I would also expect that you would be getting some odd results when you read back the dates that did save to the database.