how to get day number from date in php code example

Example 1: php get day from date

$timestamp = strtotime('2009-10-22');

$day = date('D', $timestamp);
var_dump($day);

Example 2: get day from date php

// Prints the day
echo date("l") . "<br>";

Example 3: how to check the day of any date in php

// how to check the day of any date in php?

//Our YYYY-MM-DD date string.
$date = $request->start_date;

//Convert the date string into a unix timestamp.
$unixTimestamp = strtotime($date);

//Get the day of the week using PHP's date function.
$dayOfWeek = date("l", $unixTimestamp);

//Print out the day that our date fell on.
$day = $date . ' fell on a ' . $dayOfWeek;