PHP Sorting Arrays

PHP Sorting Arrays

Sorting means arrange values in ascending or descending order. In this tutorial, we ll learn how to sort an array.

Functions For Sort Arrays

• sort() – sort arrays in ascending order
• rsort() – sort arrays in descending order
• asort() – sort associative arrays in ascending order, according to the value
• ksort() – sort associative arrays in ascending order, according to the key
• arsort() – sort associative arrays in descending order, according to the value
• krsort() – sort associative arrays in descending order, according to the key

1. sort() – Sort Array in Ascending Order

The following example sorts the elements of the $cities array in ascending alphabetical order:

Example

<?php
$cities = array("Noida", "Jaipur", "Delhi");
sort($cars);
print_r($cars);
?>

OutPut

Array ( [0] => Delhi [1] => Jaipur [2] => Noida)

2. rsort() – Sort Array in descending Order

The following example sorts the elements of the $cities array in ascending descending order:

Example

<?php
$cities = array("Noida", "Jaipur", "Delhi");
sort($cars);
print_r($cars);
?>

OutPut

Array ( [0] => Noida [1] => Jaipur [2] => Delhi)

3. asort() – sort associative arrays in ascending order, according to the value

The following example sorts the elements of the $cities array in ascending descending order:

Example

<?php
// Define array
$age = array("Peter"=>20, "Harry"=>14, "John"=>45, "Clark"=>35);
 
// Sorting array by value and print
asort($age);
print_r($age);
?>

OutPut

Array ( [0] => Noida [1] => Jaipur [2] => Delhi)

4. ksort() – sort associative arrays in ascending order, according to the value

The following example sorts the elements of the $cities array in ascending descending order:

Example

<?php
// Define array
$age = array("Peter"=>20, "Harry"=>14, "John"=>45, "Clark"=>35);
 
// Sorting array by value and print
asort($age);
print_r($age);
?>

OutPut

Array ( [0] => Noida [1] => Jaipur [2] => Delhi)

5. arsort – sort associative arrays in ascending order, according to the value

The following example sorts the elements of the $cities array in ascending descending order:

Example

<?php
// Define array
$age = array("Peter"=>20, "Harry"=>14, "John"=>45, "Clark"=>35);
 
// Sorting array by value and print
asort($age);
print_r($age);
?>

OutPut

Array ( [0] => Noida [1] => Jaipur [2] => Delhi)

6. ksort() – sort associative arrays in ascending order, according to the value

The following example sorts the elements of the $cities array in ascending descending order:

Example

<?php
// Define array
$age = array("Peter"=>20, "Harry"=>14, "John"=>45, "Clark"=>35);
 
// Sorting array by value and print
asort($age);
print_r($age);
?>

OutPut

Array ( [0] => Noida [1] => Jaipur [2] => Delhi)