PHP natsort Function

Definiton :

PHP natsort is an inbuilt function in PHP. It sorts an array using natural order algorithm which is how a normal human being would sort the array. Therefore, it does not check for the type of value for comparison. For example, in string representation 40 is less than 8 in standard sorting algorithms as 4 comes before 8 lexicographically. However, in natural order 40 is greater than 8. In this article, we will discuss the PHP natsort Function

The basic syntax of the natsort() function is given with:

    natsort(array);

Parameters

The natsort() function accepts the following parameters.

Example1 : A list of file names to be sorted as follows

Output :

Array
(
    [0] => 1.txt
    [1] => 10.txt
    [2] => 13.txt
    [3] => 3.txt
)
Array
(
    [3] => 1.txt
    [2] => 3.txt
    [1] => 10.txt
    [0] => 13.txt
)

Example2 : Below example shows how negative numeric strings will be sorted in natural ordering.

Output :