title: datetime function in php
body: <p>I  want to store the data and time in my MYSQL db.I have a datetime field in my db
  I want to store current datatime in my db
  How shold i get the current date time?How to pass it to db via a sql query </p>
  
  <p>How can i then retriev an print it in correct yyyy--dd--mm format or any other format
  What wil be format of time? wil it be 23 hrs etc?
  How do i print date and time?</p>