PHP | Ds\Deque pop() Function
Last Updated :
14 Aug, 2019
The Ds\Deque::pop() function is an inbuilt function in PHP which is used to remove the last element from Deque (if Deque is not empty) and return it. If Deque is empty then it throws an exception.
Syntax:
public Ds\Deque::pop( void ) : mixed
Parameters: This function does not accept any parameter.
Return Value: This function returns the removed last element from the Deque.
Below programs illustrate the Ds\Deque::pop() function in PHP:
Program 1:
<?php
$deck = new \Ds\Deque([10, 20, 30, 40, 50, 60]);
echo ( "Elements of Deque\n" );
print_r( $deck );
echo ( "\nLast element of deque: " );
print_r( $deck ->pop());
echo ( "\nElements of Deque\n" );
print_r( $deck );
?>
|
Output:
Elements of Deque
Ds\Deque Object
(
[0] => 10
[1] => 20
[2] => 30
[3] => 40
[4] => 50
[5] => 60
)
Last element of deque: 60
Elements of Deque
Ds\Deque Object
(
[0] => 10
[1] => 20
[2] => 30
[3] => 40
[4] => 50
)
Program 2:
<?php
$deck = new \Ds\Deque([ "geeks" , "for" , "geeks" , "practice" ]);
echo ( "Elements of Deque\n" );
print_r( $deck );
echo ( "\nLast element of deque: " );
print_r( $deck ->pop());
echo ( "\nElements of Deque\n" );
print_r( $deck );
?>
|
Output:
Elements of Deque
Ds\Deque Object
(
[0] => geeks
[1] => for
[2] => geeks
[3] => practice
)
Last element of deque: practice
Elements of Deque
Ds\Deque Object
(
[0] => geeks
[1] => for
[2] => geeks
)
Reference: http://php.net/manual/en/ds-deque.pop.php
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