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PHP | Ds\Sequence sort() Function

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  • Last Updated : 19 Sep, 2022
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The Ds\Sequence::sort() function is an inbuilt function in PHP which is used to sort the sequence element in the same place. Syntax:

void abstract public Ds\Sequence::sort ([ callable $comparator ] )

Parameters: This function accepts a single parameter $comparator which is used to hold the comparison function. The comparison function returns an integer value less than, greater than or equal to zero. Return value: This function does not returns any values. Below programs illustrate the Ds\Sequence::sort() function in PHP: Program 1: 

php




<?php
  
// Create new sequence
$seq new \Ds\Vector([2, 4, 1, 9, 6, 5, 12, 9]);
 
// Use sort() function to sort
// the sequence element
$seq->sort();
 
print_r($seq);
 
?>


Output:

Ds\Vector Object
(
    [0] => 1
    [1] => 2
    [2] => 4
    [3] => 5
    [4] => 6
    [5] => 9
    [6] => 9
    [7] => 12
)

Program 2: 

php




<?php
  
// Create new sequence
$seq new \Ds\Vector([2, 4, 1, 9, 6, 5, 12, 9]);
 
// Use sort() function to sort
// the sequence element
$seq->sort(function($x, $y) {
    return $y <=> $x;
});
 
print_r($seq);
 
?>


Output:

Ds\Vector Object
(
    [0] => 12
    [1] => 9
    [2] => 9
    [3] => 6
    [4] => 5
    [5] => 4
    [6] => 2
    [7] => 1
)

Reference: http://php.net/manual/en/ds-sequence.sort.php

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