﻿ PHP Array Exercise: Sort an associative array - w3resource

# PHP Array Exercises : Sort an associative array

## PHP Array: Exercise-8 with Solution

Write a PHP script to sort the following associative array :

array("Sophia"=>"31","Jacob"=>"41","William"=>"39","Ramesh"=>"40") in
a) ascending order sort by value
b) ascending order sort by Key
c) descending order sorting by Value
d) descending order sorting by Key

Sample Solution:

PHP Code:

``````<?php
// Echo a message indicating the start of the section for sorting associative arrays in ascending order by value
echo "
Associative array : Ascending order sort by value";

// Define an associative array and sort it in ascending order by value using asort()
\$array2 = array("Sophia" => "31", "Jacob" => "41", "William" => "39", "Ramesh" => "40");
asort(\$array2);

// Iterate through the sorted array and echo the key-value pairs
foreach (\$array2 as \$y => \$y_value) {
echo "Age of " . \$y . " is : " . \$y_value . "";
}

// Echo a message indicating the start of the section for sorting associative arrays in ascending order by key
echo "
Associative array : Ascending order sort by Key";

// Define an associative array and sort it in ascending order by key using ksort()
\$array3 = array("Sophia" => "31", "Jacob" => "41", "William" => "39", "Ramesh" => "40");
ksort(\$array3);

// Iterate through the sorted array and echo the key-value pairs
foreach (\$array3 as \$y => \$y_value) {
echo "Age of " . \$y . " is : " . \$y_value . "";
}

// Echo a message indicating the start of the section for sorting associative arrays in descending order by value
echo "
Associative array : Descending order sorting by Value";

// Define an associative array and sort it in descending order by value using arsort()
\$age = array("Sophia" => "31", "Jacob" => "41", "William" => "39", "Ramesh" => "40");
arsort(\$age);

// Iterate through the sorted array and echo the key-value pairs
foreach (\$age as \$y => \$y_value) {
echo "Age of " . \$y . " is : " . \$y_value . "";
}

// Echo a message indicating the start of the section for sorting associative arrays in descending order by key
echo "
Associative array : Descending order sorting by Key";

// Define an associative array and sort it in descending order by key using krsort()
\$array4 = array("Sophia" => "31", "Jacob" => "41", "William" => "39", "Ramesh" => "40");
krsort(\$array4);

// Iterate through the sorted array and echo the key-value pairs
foreach (\$array4 as \$y => \$y_value) {
echo "Age of " . \$y . " is : " . \$y_value . "";
}
?>
```
```

Output:

```Associative array : Ascending order sort by value
Age of Sophia is : 31
Age of William is : 39
Age of Ramesh is : 40
Age of Jacob is : 41

Associative array : Ascending order sort by Key
Age of Jacob is : 41
Age of Ramesh is : 40
Age of Sophia is : 31
Age of William is : 39

Associative array : Descending order sorting by Value
Age of Jacob is : 41
Age of Ramesh is : 40
Age of William is : 39
Age of Sophia is : 31

Associative array : Descending order sorting by Key
Age of William is : 39
Age of Sophia is : 31
Age of Ramesh is : 40
Age of Jacob is : 41
```

Flowchart:

PHP Code Editor: