PHP | Ds\Deque copy() Function
Last Updated :
14 Aug, 2019
Improve
The Ds\Deque::copy() function is an inbuilt function in PHP which is used to return a copy of the Deque. This will return a shallow copy of the Deque.
Syntax:
PHP
PHP
public Ds\Deque::copy ( void ) : Ds\DequeParameters: This function does not contain any parameter. Return Value: This function returns a copy of the Deque elements. Below programs illustrate the Ds\Deque::copy() function in PHP: Program 1:
<?php
// Declare deque
$deck = new \Ds\Deque([1, 2, 3, 4, 5, 6]);
echo("Elements in the Deque\n");
// Display the Deque elements
var_dump($deck);
// Use copy() function to
// copy the Deque
$deck_copy = $deck->copy();
echo("\nCopy Deque elements\n");
// Display the Deque elements
var_dump($deck_copy);
?>
<?php// Declare deque$deck = new \Ds\Deque([1, 2, 3, 4, 5, 6]);echo("Elements in the Deque\n");// Display the Deque elementsvar_dump($deck);// Use copy() function to // copy the Deque$deck_copy = $deck->copy();echo("\nCopy Deque elements\n");// Display the Deque elementsvar_dump($deck_copy);?>
Output:
Program 2:
Elements in the Deque
object(Ds\Deque)#1 (6) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
[3]=>
int(4)
[4]=>
int(5)
[5]=>
int(6)
}
Copy Deque elements
object(Ds\Deque)#2 (6) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
[3]=>
int(4)
[4]=>
int(5)
[5]=>
int(6)
}
<?php
// Declare deque
$deck = new \Ds\Deque(["geeks", "for", "geeks"]);
echo("Elements in the Deque\n");
// Display the Deque elements
print_r($deck);
// Use copy() function to
// copy the Deque
$deck_copy = $deck->copy();
echo("\nCopy Deque elements\n");
// Display the Deque elements
print_r($deck_copy);
?>
<?php// Declare deque$deck = new \Ds\Deque(["geeks", "for", "geeks"]);echo("Elements in the Deque\n");// Display the Deque elementsprint_r($deck);// Use copy() function to // copy the Deque$deck_copy = $deck->copy();echo("\nCopy Deque elements\n");// Display the Deque elementsprint_r($deck_copy);?>
Output:
Reference: http://php.net/manual/en/ds-deque.copy.php
Elements in the Deque
Ds\Deque Object
(
[0] => geeks
[1] => for
[2] => geeks
)
Copy Deque elements
Ds\Deque Object
(
[0] => geeks
[1] => for
[2] => geeks
)
