Trusted answers to developer questions
Trusted Answers to Developer Questions

Related Tags

php
communitycreator

What is the Ds\Set merge() function in PHP?

Syed Muhammad Ali Mustafa

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 Ds\Set::merge() function in PHP is used to add all the given values to a set.

Syntax

The Ds\Set::merge() function can be declared as shown in the code snippet below:

Ds\Set public Ds\Set::merge ( mixed $values ) 
  • mixed $values: These are the values to be added to the set.

Return value

The Ds\Set::merge() function returns the set after adding the given values to it.

The values are not added to the original set. The values are added to a copy of the set and the original set remains unaffected.

Example

Consider the code snippet below, which demonstrates the use of the Ds\Set::merge() function.

<?php

$s1 = new \Ds\Set([1, 2, 3]);
var_dump($s1->merge([4, 5]));

$s2 = new \Ds\Set(['a', 'b', 'c', 'd']);
var_dump($s2->merge(['e']));

?>
Demonstration of DS\Set::merge() function

Explanation

  • In line 3, we declare a set s1.

  • In line 4, we add the given values to s1 using Ds\Set::merge().

  • In line 6, we declare another set s2.

  • In line 7, we add the given values to s2 using Ds\Set::merge().

RELATED TAGS

php
communitycreator

CONTRIBUTOR

Syed Muhammad Ali Mustafa

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.

Keep Exploring