This diploma thesis deals with designing and implementation of administration system for Metal Ryspol, s. r. o. In the implementation phase, modern development technologies were used, such as MVC architecture and responsive web design.

This diploma thesis is focused on the implementation of the interactive educational application based on gamification which allows students to acquire new knowledge using new and modern way of learning. The thesis deals with analysis of mobile and web educational applications focused on gamification. Based on the analysis outcome, the functionality of the application is designed and implemented. This thesis also describes functionality for student and admin interfaces and further focuses on REST API. The implemented application expands teaching methods of the Institute of Informatics at the Mendel University in Brno. Further development of the web application is proposed within the conclusion part of this diploma thesis.

In this project, a web application called Digi-Vites is developed. It consists of an API created with the framework Laravel, as well as a website created with the framework Angular. The goal of the project was to create a website where users can create digital invitations easily and securely. The result was an API that handles data in a secure way before it is stored in a database. It also resulted in a website where users can log in and create invitations, as well as manage their existing invitations by being able to edit or delete them. / I detta projekt utvecklas en webbapplikation vid namn Digi-Vites. Den består av ett API som skapats med ramverket Laravel, samt en webbplats som skapats med ramverket Angular. Målet med projektet var att skapa en webbplats där användare kan skapa digitala inbjudningar på ett enkelt och säkert sätt. Resultatet blev ett API som hanterar data på ett säkert sätt innan det lagras i en databas. Det blev även en webbplats där användare kan logga in och skapa inbjudningar, samt hantera sina befintliga inbjudningar genom att kunna ändra eller ta bort dem.

The following degree report includes the theoretical information needed to understand the retelling of a project where this report's author had the goal of building a CMS-system in the form of a block editor using the framework Laravel. This was done on-site for the company Mina Bästa Polare AB, who found a need for a CMS-system to use within their Laravel projects. This need was found through their customers' administrators needing to contact the developers for changes that otherwise could be made by the administrators if they had a CMSsystem available. The work done that is retold in this report was done in the framework Laravel, a block editor was built to be used as a CMS-system for the developers at Mina Bästa Polare to implement within their Laravel-projects. Before the development of the block editor could start the work needed to be planned, with a Gantt scheme-alike document a time estimate was made for every step in the process. The block editor was visually designed with wireframes and the database architecture was designed with an ER-diagram. The development of this block editor was done within the frameworks Laravel, Inertia, Vue and Tailwind. These techniques were used to create a full stack website that can be shown as a first example of how this CMS-system can be used within Laravel-projects. With this system available to them both the developers and customers of Mina Bästa Polare will experience a smoother running workday / Föreliggande rapport presenterar den teoretiska information som behövs för att förstå efterkommande återberättande av ett projektarbete där målet var att rapportens författare skulle bygga ett CMS-system i form av en blockeditor inom ramverket Laravel. Projektarbetet utfördes på plats hos företaget Mina Bästa Polare AB, en webbyrå baserad i Östersund som upptäckt ett behov av ett CMS-system i form av en blockeditor till sina Laravel-projekt. tillgång till ett sådant CMS-system. Ett mål är att editorn skall bli så “decoupled“ som möjligt, vilket betyder att i högsta möjliga mån skall kunna implementeras i vilket Laravel-projekt som helst. Innan utvecklingen av blockeditorn påbörjades så strukturerades arbetet upp genom att det tidsplanerades med hjälp av en tidplan som liknar ett Gantt-schema vilket estimerar en tidsaspekt för varje steg i processen. Sedan påbörjades blockeditorns visuella design vilket gjordes med wireframes följt av att databasen arkitektur designades genom ett ER-diagram. Utvecklingen utfördes i ramverken Laravel, Inertia, Vue och Tailwind. Dessa tekniker användes för att i slutändan resultera i en fullstack webbplats som kan visas upp som ett första exempel på hur denna CMS-system kan användas inom Laravel-projekt. Med detta system tillgängligt kan nu inte bara Mina Bästa Polares utvecklare utan även deras kunder få en smidigare vardag när de använder detta system.

Custom T-shirt Designs is a web-based application. The purpose of this project is to provide a website that would allow customers to be able to customize T-shirt and place an order of custom T-shirt. Customers can sign up, sign in, select T-shirt color, add text, choose Font, choose Font color, upload an image, apply filters to images, transform text or images, choose T-shirt size and save designs for future references. Customers would be able to add the design to a cart, manage cart and checkout with their credit card to purchase for the order and view their previous orders. The project focuses on object-oriented programming paradigm using PHP framework Laravel along with JavaScript, CSS, and HTML, Bootstrap and jQuery. Custom T-shirt Designs application uses Model-view-controller architecture. Stripe API is used to handle the credit card payments tokens providing a secure way for customers to purchase a T-shirt. Google SMTP is used to send confirmation of purchase order to administrator and customer. The project implements AJAX technology to send and receive parts of data from the server asynchronously making Custom T-shirt Designs a fast and efficient real-time web application.

The objective of this study is to evaluate performance of four popular PHP frameworks Laravel, Symfony, CodeIgniter and Phalcon together with the plain PHP. The decision of making this study was based on the fact that there is a lack of comparison tests between the most popular PHP frameworks. Visiting the official websites of these frameworks, the first thing to notice is the slogans that have been made by the core teams. The majority of these slogans contain quality attributes like speed and high performance. As a developer looking for performance in your next project, choosing the right PHP framework by these slogans is not that easy. Therefor, the performance of these frameworks is put to the test. And to do that, three experiments are conducted in which five functionally equivalent PHP applications are developed and used as targets. One version of these applications represents the plain PHP and the other four represent the four mentioned frameworks. The experiments are conducted in two sessions. The first session deals with the execution time and the stack trace measurements while the second one is covering the measurement of the memory usage consumption. The result outcome of these experiments has been analyzed and interpreted in order to expose the performance of the targeted frameworks. The experiment results prove that the targeted frameworks perform differently compared with each other and the PHP stack. Plain PHP and Phalcon are performing well while the other three frameworks have both mediocre and low performance.

The cryptocurrencies are growing more and more popular, both due to their independency on institutions and the feeling of anonymity they provide. This is, however, also accompanied by an increasing number of their abuse for criminal activities. This thesis explores the principles of current cryptocurrencies as well as techniques used for increasing anonymity of their usage. Based on the findings, it proposes a solution attemping to deanonymise activity in select cryptocurrencies.

Cílem této práce je vytvořit platformu pro sběr a zobrazování metadat o kryptoměnových adresách z veřejného i temného webu. K dosažení tohoto cíle jsem použil technologie zpracování webu napsané v PHP. Komplikace doprovázející automatické zpracování webových stránek byly vyřešeny techonologí Apache Kafka a jejími schopnosti škálování procesů. Modularita platformy byla dosažena pomocí architektury microservices a Docker containerization. Práce umožňuje jedinečný způsob, jak hledat potenciální kriminální aktivity, které se odehrály mimo rámec blockchain, pomocí webové aplikace pro správu platformy a vyhledávání v extrahovaných datech. Vytvořená platforma zjednodušuje přidávání nových, na sobě nezávislých modulů, kde Apache Kafka zprostředkovává komunikaci mezi nimi. Výsledek této práce může být použit pro detekci a prevenci kybernetické kriminality. Uživatelé tohoto systému mohou být orgány činné v trestním řízení nebo ostatní činitelé a uživatelé, zajímající se o reputaci a kreditibilitu kryptoměnových adres.

The thesis describes the design and implementation of an information system for a small business company. The thesis includes strategic analyzes of the company and an assessment of the current situation associated with the Covid­-19 pandemic. Subsequently, the thesis describes the process of specification and analysis of the requirements of the client, the design and implementation of the system corresponding to the proposals. Finally, the thesis provides the evaluation and expected benefits of the information system.

The diploma thesis deals with a development of a system, which serves as a supportive tool for improvement of cyberbullying prevention. The system provides continuous collection and evaluation of information about how much time users spend on mobile apps intended for mobile devices running Android operating system. The main parts of the system are the Android application and the remote server with the web application. The Android application provides continuous collection of information about device usage and sends it to the remote server at weekly intervals. Access to mobile device usage history is obtained by the API android.app.usage. The web application is responsible for receiving data from individual devices and for subsequent data processing. The results of data processing are presented through the user interface of the web application. The PHP framework Laravel is used to build the web application.