ArrayObject natsort() Function in PHP

The natsort() function of the ArrayObject class in PHP is used to sort the elements of the ArrayObject following a natural order sorting algorithm. The natsort() function is used to sort alphanumeric strings in a order a normal human being would do.

Syntax:

void natsort()

Parameters: This function does not accepts any parameters.

Return Value: This function does not returns any value.

Below programs illustrate the above function:

Program 1:

<?php 
// PHP program to illustrate the 
// natsort() function 
  
$arr = array("Beginner100", "Beginner99", "Beginner1", "Beginner02"); 
  
// Create array object 
$arrObject = new ArrayObject($arr); 
  
// Sort the ArrayObject 
$arrObject->natsort(); 
  
// Print the sorted ArrayObject 
print_r($arrObject); 
  
?> 

Output:

ArrayObject Object
(
    [storage:ArrayObject:private] => Array
        (
            [3] => Beginner02
            [2] => Beginner1
            [1] => Beginner99
            [0] => Beginner100
        )

)

Program 2:

<?php 
// PHP program to illustrate the 
// natsort() function 
  
$arr = array("Beginner100", "Beginner99", "Beginner1", "Beginner02"); 
  
// Create array object 
$arrObject = new ArrayObject($arr); 
  
// Clone the ArrayObject 
$tempArrObj = clone $arrObject; 
  
// Sort the $temoArrObj using standard  
// sorting algorithm 
$tempArrObj->asort(); 
  
// Sort the ArrayObject using Natural 
// ordering algorithm 
$arrObject->natsort(); 
  
// Compare Both of the results 
echo "Sorted using standard sorting:\n"; 
print_r($tempArrObj); 
  
echo "\nSorted using Natural ordering:\n"; 
print_r($arrObject); 
  
?> 

Output:

Sorted using standard sorting:
ArrayObject Object
(
    [storage:ArrayObject:private] => Array
        (
            [3] => Beginner02
            [2] => Beginner1
            [0] => Beginner100
            [1] => Beginner99
        )

)

Sorted using Natural ordering:
ArrayObject Object
(
    [storage:ArrayObject:private] => Array
        (
            [3] => Beginner02
            [2] => Beginner1
            [1] => Beginner99
            [0] => Beginner100
        )

)

Reference: http://php.net/manual/en/arrayobject.natsort.php

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