Book Image

PHP 7 Data Structures and Algorithms

By : Mizanur Rahman
5 (1)
Book Image

PHP 7 Data Structures and Algorithms

5 (1)
By: Mizanur Rahman

Overview of this book

PHP has always been the the go-to language for web based application development, but there are materials and resources you can refer to to see how it works. Data structures and algorithms help you to code and execute them effectively, cutting down on processing time significantly. If you want to explore data structures and algorithms in a practical way with real-life projects, then this book is for you. The book begins by introducing you to data structures and algorithms and how to solve a problem from beginning to end using them. Once you are well aware of the basics, it covers the core aspects like arrays, listed lists, stacks and queues. It will take you through several methods of finding efficient algorithms and show you which ones you should implement in each scenario. In addition to this, you will explore the possibilities of functional data structures using PHP and go through advanced algorithms and graphs as well as dynamic programming. By the end, you will be confident enough to tackle both basic and advanced data structures, understand how they work, and know when to use them in your day-to-day work
Table of Contents (14 chapters)

Vector

A vector is a linear data structure where values are stored sequentially and also the size grows and shrinks automatically. Vector is one of the most efficient linear data structures as the value's index is mapped directly with the index of the buffer and allows faster access. DS vector class allows us to use the PHP array syntax for operations, but internally, it has less memory consumption than PHP array. It has constant time operations for push, pop, get, and set. Here is an example of vector:

$vector = new \Ds\Vector(["a", "b", "c"]); 
echo $vector->get(1)."\n";
$vector[1] = "d";
echo $vector->get(1)."\n";
$vector->push('f');
echo "Size of vector: ".$vector->count();

As we can see from the preceding code, we can define a vector using the PHP array syntax and also get or...