<?php
//sorting.php

//$d = [15, 20, "Bob", "Pete", 1, "Mary", 7, "al"];
$d = [9=>15, "Jim"=>20, "Al"=>"Bob", 4=>"Pete", 6=>1, "Jon"=>"Mary", 3=>7];
echo "Original array:\n";
print_r($d);  //Display orginal array
echo "1Press Enter to continue ... "; $discard = fgets(STDIN);

//$d = [15, 20, "Bob", "Pete", 1, "Mary", 7, "al"];
$d = [9=>15, "Jim"=>20, "Al"=>"Bob", 4=>"Pete", 6=>1, "Jon"=>"Mary", 3=>7];
sort($d);
echo "Array after sort():\n";
print_r($d);  //Display values sorted, keys become integer indices
echo "2Press Enter to continue ... "; $discard = fgets(STDIN);

//$d = [15, 20, "Bob", "Pete", 1, "Mary", 7, "al"];
$d = [9=>15, "Jim"=>20, "Al"=>"Bob", 4=>"Pete", 6=>1, "Jon"=>"Mary", 3=>7];
asort($d); //Sort string values, then integer values, retain original keys
echo "Array after asort():\n";
print_r($d);
echo "3Press Enter to continue ... "; $discard = fgets(STDIN);

//$d = [15, 20, "Bob", "Pete", 1, "Mary", 7, "al"];
$d = [9=>15, "Jim"=>20, "Al"=>"Bob", 4=>"Pete", 6=>1, "Jon"=>"Mary", 3=>7];
ksort($d); //Sort string keys, then integer keys, retain original values
echo "Array after ksort():\n";
print_r($d);
echo "4Press Enter to continue ... "; $discard = fgets(STDIN);

//Note that rsort(), arsort(), and krsort()
//behave exactly as their counterparts above,
//except that the order is reversed.
?>