PHP | DsDeque copy() Function

PHP | Ds\Stack copy() Function

Last Updated : 18 Jan, 2021

The Ds\Stack::copy() function of PHP Ds\Stack class is used to create a shallow copy of the original stack and returns the copied stack.

Syntax:

Ds\Stack public Ds\Stack::copy ( void )

Parameters: This function does not accept any parameters.
Return Value: This function returns a shallow copy of the original stack.

Below programs illustrate the Ds\Stack::copy() function:

Program 1:

PHP

<?php

// PHP program to illustrate the 
// Ds\stack::copy() function 

// Create a Stack instance
$stack = new \Ds\Stack();

// Pushing elements to Stack
$stack->push("Welcome");
$stack->push("to");
$stack->push("GfG");

// Print the Copied Stack
print_r($stack->copy());

?>

Output:

Ds\Stack Object
(
    [0] => GfG
    [1] => to
    [2] => Welcome
)

Program 2:

PHP

<?php

// PHP program to illustrate the 
// Ds\stack::copy() function 

// Create a Stack instance
$stack = new \Ds\Stack();

// Pushing Mixed value elements to Stack
$stack->push("Welcome");
$stack->push("to");
$stack->push("GfG");
$stack->push(10);
$stack->push(5.5);

// Print the copied stack
print_r($stack->copy());

?>

Output:

Ds\Stack Object
(
    [0] => 5.5
    [1] => 10
    [2] => GfG
    [3] => to
    [4] => Welcome
)

Reference: http://php.net/manual/en/ds-stack.copy.php

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