PHP Array Sorting

PHP Array Sorting

The elements in the array can be sorted in ascending or descending order, either in alphabetical or numerical sequence.

PHP-sorting functions for arrays

In this section, we will learn the following PHP array sorting functions:

• Sort ()-sorts an array in ascending order
• Rsort ()-sorts the array in descending order
• Asort ()-sorts associative arrays in ascending order based on values
• Ksort ()-Sorts the associative array in ascending order, based on the key
• Arsort ()-sorts associative arrays in descending order by value
• Krsort ()-Sorts the associative array in descending order, based on the key

Sorting an array in ascending order-sort ()

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

Instance

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

The result of the output is the   BMW
             SAAB
             Volvo

Sort stands for ascending

The following example sorts the elements in an array $numbers in ascending numbers:

Instance

<?php$numbers=array (3,5,1,22,11); sort ($numbers);? >
Sort is ascending
The result of the output is
1341122

Sort ascending by value of an array-asort ()

The following example sorts the associative arrays in ascending order based on values:

Instance

<?php$age=array ("Bill" = "+", "Steve" = "Notoginseng", "Peter" and "Asort"); ($age);? >



Key=bill, value=35
Key=steve, value=37
Key=peter, value=43

Sort ascending by Key array-ksort ()

The following example sorts an associative array in ascending order based on the key:

Instance

<?php$age=array ("Bill" = "+", "Steve" = "Notoginseng", "Peter" and "Ksort"); ($age);? >

Key=bill, value=35
Key=peter, value=43
Key=steve, value=37

Sort Descending by Value array-arsort ()

The following example sorts the associative arrays by value in descending order:

Instance

<?php$age=array ("Bill" = "+", "Steve" = "Notoginseng", "Peter" and "Arsort"); ($age);? >
Key=peter, value=43
Key=steve, value=37
Key=bill, value=35

Sort descending order of keys by Key-Krsort ()

The following example sorts the associative arrays in descending order based on the key:

Instance

<?php$age=array ("Bill" = "+", "Steve" = "Notoginseng", "Peter" and "Krsort"); ($age);? >


Key=steve, value=37
Key=peter, value=43
Key=bill, value=35

PHP Array Sorting