PHP method to automatically generate numbers based on data ID

This article mainly introduces the method of automatically generating numbers based on data ID in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.

is as follows:

/*编号=年份后两位+月份+id四位数*/ $id = $this->student_model->save(0, $data); $sn = date('Y', time()); $sn = substr($sn, -2); $sn.= date('m', time()); $sn.=sprintf("%04d", $id);

[Result Preview] Example: 14120001

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