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What is Ds\Stack::pop() in PHP?

Harris Amjad

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

The Stack::pop() function in PHP returns the element that is available at the top of the stack and removes that element from the stack.

Figure 1 shows the visual representation of the Stack::pop() function.

Figure 1: Visual representation of Stack::pop() function

Syntax

stack_name->pop()
## where the stack_name is the name of the stack

Parameters

This function does not require any parameters.

Return value

This function returns the element that is available at the top of the stack and removes that element from the stack.

Example

<?php
$stack = new \Ds\Stack();
#sending the list of elements
$stack->push(1,3,5,2,0);
echo("Stack before pop");
print_r($stack);
echo("Stack after pop");
$stack->pop();
print_r($stack);
?>

Output

Stack before popDs\Stack Object
(
[0] => 0
[1] => 2
[2] => 5
[3] => 3
[4] => 1
)
Stack after popDs\Stack Object
(
[0] => 2
[1] => 5
[2] => 3
[3] => 1
)

RELATED TAGS

php
communitycreator

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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