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PHP | Ds\Sequence reversed() Function

  • Last Updated : 22 Aug, 2019

The Ds\Sequence::reversed() function is an inbuilt function in PHP which is used to return the reverse copy of sequence element.

Syntax:

Ds\Sequence abstract public Ds\Sequence::reversed ( void )

Parameters: This function does not accepts any parameter.

Return Value: This function returns the reversed copy of sequence elements.

Below programs illustrate the Ds\Sequence::reversed() function in PHP:



Program 1:




<?php 
  
// Create new Sequence 
$seq = new \Ds\Vector([1, 2, 3, 4, 5]); 
  
// Display the sequence elements 
print_r($seq); 
  
echo("After reversing the sequence elements\n"); 
  
// Use reversed() function to reverse 
// the copy of sequence and display it 
print_r($seq->reversed()); 
  
?> 
Output:
Ds\Vector Object
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)
After reversing the sequence elements
Ds\Vector Object
(
    [0] => 5
    [1] => 4
    [2] => 3
    [3] => 2
    [4] => 1
)

Program 2:




<?php 
  
// Create new Vector 
$seq = new \Ds\Vector(["Geeks", "for", "Geeks",
        "Computer", "Science", "Portal"]); 
  
// Display the elements 
print_r($seq); 
  
echo("Sequence after reversing\n"); 
  
// Use reversed() function to reverse 
// the element and display it 
print_r($seq->reversed());
  
?>
Output:
Ds\Vector Object
(
    [0] => Geeks
    [1] => for
    [2] => Geeks
    [3] => Computer
    [4] => Science
    [5] => Portal
)
Sequence after reversing
Ds\Vector Object
(
    [0] => Portal
    [1] => Science
    [2] => Computer
    [3] => Geeks
    [4] => for
    [5] => Geeks
)

Reference: https://www.php.net/manual/en/ds-sequence.reversed.php




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