PHP to automatically generate the number based on the data ID of the implementation method _php instance

As shown below:

<strong><span style= "FONT-SIZE:18PX;" >/* Number = two digits + month +id four digits 
 
/$id = $this->student_model->save (0, $data); 
$SN = Date (' Y ', Time ()); 
$SN = substr ($SN,-2); 
$sn. = Date (' m ', Time ()); 

Results Preview Example: 14120001

The above is a small series for everyone to bring PHP based on the data ID automatically generate the number of the implementation of the whole content, I hope that we support cloud Habitat Community ~