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What is the Ds\Vector pop() function in PHP?

Muhammad Ashir

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.

PHP provides an efficient list implementation in the form of the DS\Vector class. The DS\Vector class is a sequence of values stored in a contiguous buffer. The buffer can resize automatically depending on the number of elements.

This is the most efficient sequential data structure because a value’s index is directly mapped to its index in the buffer. The size of DS\Vector is not bound by any factor or exponent and can be anything.

Ds\Vector::pop()

Ds\Vector::pop removes and returns the last value in the vector.

Syntax

public Ds\Vector::pop(): mixed

Parameters

  • None.

Return value

Ds\Vector::pop() returns the last value in the vector.

Code

<?php
$myVector = new \Ds\Vector([1, 2, 3]);
var_dump($myVector->pop());
var_dump($myVector->pop());
var_dump($myVector->pop());
?>

Output

int(3)
int(2)
int(1)

To run this program, you need to install Data Structures for PHP on your local machine.

In the code above, we create a new vector called myVector and initialize it with some values.

Next, we use the pop() function to remove the last value and return it. It is then printed out using the var_dump method.

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Muhammad Ashir
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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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