How to get first day of week in PHP?

To get the first day of the week in PHP, the code is as follows −

Example

<?php
   $res = date('l - d/m/Y', strtotime("this week"));
   echo "First day = ", $res;
?>

Output

This will produce the following output −

First day = Monday - 09/12/2019

Example

Let us now see another example −

<?php
   echo "Displaying Sunday as first day of a week...\n";
   $res = date('l - d/m/Y', strtotime("sunday 0 week"));
   echo "First day (next week) = ", $res;
?>

Output

This will produce the following output −

Displaying Sunday as first day of a week...
First day (next week) = Sunday - 15/12/2019