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