The PHP Date() Function
Use default timezone set function.
date_default_timezone_set('Asia/Kolkata');
use default date and time function.
echo date("Y-m-d H:i:s");
Change date & time format in php
echo date("H:i d-m-y", strtotime($clas['updated_at']));
Show Date and Time Control in HTML
Date display :
<input type="date" name="meeting-time" >
Date Time display :
<input type="datetime-local" id="meeting-time"
name="meeting-time" value="2018-06-12T19:30"
min="2018-06-07T00:00" max="2018-06-14T00:00">
How to change date format in PHP
