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PHP Ds\Queue copy() Function

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The Ds\Queue::copy() Function in PHP is used to create a shallow copy of a particular Queue instance. This function does not affect the existing Queue instance, it just creates a shallow copy of the Queue and returns it. Syntax:
Ds\Queue public Ds\Queue::copy ( void )
Parameters: This function does not accepts any parameters. Return Value: This function creates a shallow copy of an existing Queue instance and returns it. Below programs illustrate the Ds\Queue::copy() Function in PHP: Program 1:
<?php 
  
// Declare new Queue  
$q = new \Ds\Queue(); 
  
// Add elements to the Queue 
$q->push("One");
$q->push("Two");
$q->push("Three");
  
// Create copy of this Queue 
// instance and print it
print_r($q->copy());
  
?> 

                    
Output:
Ds\Queue Object
(
    [0] => One
    [1] => Two
    [2] => Three
)
Program 2:
<?php 
  
// Declare new Queue  
$q = new \Ds\Queue(); 
  
// Add elements to the Queue 
$q->push("Geeks");
$q->push("for");
$q->push("Geeks");
  
// Create copy of this Queue 
// instance and print it
print_r($q->copy());
  
?> 

                    
Output:
Ds\Queue Object
(
    [0] => Geeks
    [1] => for
    [2] => Geeks
)
Reference: http://php.net/manual/en/ds-priorityqueue.copy.php

Last Updated : 23 Aug, 2019
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