How to Convert a Date from yyyy-mm-dd to dd-mm-yyyy Format in PHP

Use the strtotime() Function

You can first use the PHP strtotime() function to convert any textual datetime into Unix timestamp, then simply use the PHP date() function to convert this timestamp into desired date format.

The following example will convert a date from yyyy-mm-dd format to dd-mm-yyyy.

<?php
$original_date = "2019-03-31";
 
// Creating timestamp from given date
$timestamp = strtotime($original_date);
 
// Creating new date format from that timestamp
$new_date = date("d-m-Y", $timestamp);
echo $new_date; // Outputs: 31-03-2019
?>