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<?php
$cars = array("Volvo", "BMW", "Toyota");
sort($cars);
?>

<?php
$numbers = array(4, 6, 2, 22, 11);
sort($numbers);
?>

<?php
$cars = array("Volvo", "BMW", "Toyota");
rsort($cars);
?>

<?php
$numbers = array(4, 6, 2, 22, 11);
rsort($numbers);
?>

<?php
$age = array("Peter" => "35", "Ben" => "37", "Joe" => "43");
asort($age);
?>

<?php
$age = array("Peter" => "35", "Ben" => "37", "Joe" => "43");
ksort($age);
?>

<?php
$age = array("Peter" => "35", "Ben" => "37", "Joe" => "43");
arsort($age);
?>

<?php
$age = array("Peter" => "35", "Ben" => "37", "Joe" => "43");
krsort($age);
?>