Associative Arrays in PHP

Consider the following array, storing parts of a date:

<?php
	$arr = [2025, 12, 31];
?>

As you already know, to get an element from this array, we need to access it by its index number. However, this is not always convenient.

Therefore, PHP allows you to set your own keys for array elements. Such an array will be called associative.

Associative arrays have the following syntax: key name, followed by an arrow =>, and then the value. Let's specify explicit keys for our array:

<?php
	$arr = [
		'year' => 2025,
		'month' => 12, 
		'day' => 31
	];
?>

Now we will access the elements of our array using the keys we defined. Let's do it:

<?php
	echo $arr['year'];  // will output 2025
	echo $arr['month']; // will output 12
	echo $arr['day'];   // will output 31
?>

Create an array $user with keys 'name', 'surname', 'patronymic' and some arbitrary values. Output to the screen the surname, name, and patronymic separated by a space.

Create an array with keys from 1 to 7, containing the names of the days of the week as values. Output to the screen all its elements.