PHP - How to Sort an Associative Array in Descending Order According to Key?

PHP - How to Sort an Associative Array in Descending Order According to Key?

Written by
Vinish Kapoor is a seasoned software development professional and a fervent enthusiast of artificial intelligence (AI). His impressive career spans over 20 years, marked by a relentless pursuit of innovation and excellence in the field of information technology. As an Oracle ACE, Vinish has distinguished himself as a leading expert in Oracle technologies, a title awarded to individuals who have demonstrated their deep commitment, leadership, and expertise in the Oracle community.
  • PHP
  • 1 min read

krsort() function in PHP is used to sort an Associative array in descending order according to the key.

The Syntax of krsort() function is given below:

krsort(arrayvariable name);

Here is an example on krsort() function:

<html>
<body>
<?php
$a=array("8"=>"kolkata","3"=>"barasat","2"=>"delhi","4"=>"bongaon");//here "8"(key1)=>"kolkata"(value1),"3"(key2)=>"barasat"(value2),"2"(key3)=>"delhi"(value3),"4"(key4)=>"bongaon"(value4)
krsort($a);
print_r($a);
?>
</body>
</html>

Output: Array ( [8] => kolkata [4] => bongaon [3] => barasat [2] => delhi )

Firstly, the Associative array $a is containing 4 elements. krsort($a) is sorting the array elements in descending order according to key, and the function print_r() is using to print the array.

See also: