What is Interface in PHP? Back to Basics

An Interface allows the users to create programs, specifying the public methods that a class must implement, without involving the complexities and details of how the particular methods are implemented. It is generally referred to as the next level of abstraction. It resembles the abstract methods, resembling the abstract classes. An Interface is defined just like a class is defined but with the class keyword replaced by the interface keyword and just the function prototypes. The interface contains no data variables. The interface is helpful in a way that it ensures to maintain a sort of metadata for all the methods a programmer wishes to work on.

Interfaces are characterized similarly as a class, however, only the interface keyword replaces the class phrase in the declaration and without any of the methods having their contents defined.

Example

Let' create an interface and implement it with a simple example.

Explanation

Here we have declared an interface MyFirstInterface with two methods getName and getAge() inside it without any content. Then the class MyClass implements this interface and uses the available methods according to requirement.

Let's learn some important Characteristic of the interface:

1. An interface comprises of methods that have no content, which means the interface methods are abstract methods.
2. Every one of the methods in interfaces must have public visibility scope.
3. Interfaces are not quite the same as classes as the class can inherit from one class but the class can implement one or more interfaces.
4. No variables cant be present inside the interface.

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Getting your first job at a freelancing site

Considering the current lockdown period, the number of freelancers is increased. many people are trying to get the online jobs and thus some times it's way difficult to start freelancing from scratch.

A couple of years ago I faced the same dilemma. No matter how low I bid, I could never get a project. But as of today if I bid on a project, 90% of the chances are that I will get it. Thanks to more than 110 Five Star Ratings.

I was almost on the verge of giving it up but then someone gave me some advice which helped me get my first project.

So how did I manage to do it?

Create a proposal where you explain why you should be picked even though you are new.

It could be something like

Dear XYZ,
I have been in this industry for XX years and such jobs are my daily practice. This is my first time on this site and hence you can see that I do not have any ratings/testimonials to show you. I can assure you that if you work with me once, you will always work with me for this kind of project.

Now you can mention stuff here on why the employer should choose you. you can Attach a sample and tell the employer that it can be delivered the moment he chooses your bid.

Submit samples of your previous work

Don't just submit any sample. The sample should be relevant to the current project you are bidding on, this will be the best thing that attracts the employer.

Submit a working sample of the current work.

If you do not want to do that then attach a video of the working application. I use CAMTASIA to record a video to show how the completed project looks like. Trust me this almost will seal the project for you.

Start with these 3 and you will see results very soon. Let me know your questions or suggestions in the comments section below if you have any. Best luck. Happy Freelancing.

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Choosing Work From Home (WFH) Career As A Freelancer To Bring in Cash

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A great method to acquire income for work from home career openings is that of freelance work. It's an opportunity to work as indicated by your own hours accomplishing work you like.

Perhaps the most ideal approach to procure salary for work from home career is to the agreement to accomplish freelance work from your home office. The freelance composition or other freelance work can take numerous structures, contingent on your experience and preparation. You can surely structure the freelance work to accentuate the work you appreciate the most and limit the work you disdain. Freelance work might be gotten that requires practically no venture. It permits you to work at your own pace and for an expense that will address your issues. These are only two of the advantages of accomplishing freelance work.

Finding a site 

There are a few top-quality sites where you can post freelance occupations or where you can offer on employments that fall inside your experience and preparation. The sorts of occupations are stated on the site and the bidder determines the amount of the work prerequisites will be finished, the time period wherein it will be finished and the expense for carrying out the responsibility. The purchaser at that point can pick the bidder that is liked and the arrangement is then concluded. The purchaser and the specialist organization both advantage with work from home employments.

Article Directories / Portals

Numerous purchasers contract with specialist co-ops to compose articles that will be put in article catalogs. These registries give significant information on an assortment of subjects. Since they contain information about the URL or site of the writer, articles put in indexes are a simple method to expand your page positioning through search engine optimization. Connecting these articles to the site carries traffic to the referenced site. Finishing the articles that will be set in the registries is a great method to break into work from home career freelance exercises. In the event that you can compose informative articles in a new and enthusiastic manner, this kind of home-based work will be perfect for you.

Search Engine Optimization 

Another approach to exploit the work from home career chances of freelance work is to do search engine optimization for sites. This should be possible by arranging and executing methods on the site straightforwardly, for example, in the manner in which the site is planned and actualized. It can likewise be done by including content through articles composed with rich watchword nearness. Watchwords are a significant piece of search engine optimization and are regularly part of the provisional labor to be found on freelance project sites.

Article Content 

Freelance work at home career may likewise comprise of composing articles legitimately to be added to a specific site. This procedure is additionally a piece of search engine optimization feature Articles on the grounds that informative articles written in a new and connecting with style will attract traffic from the search engine results page and will keep guests at the site since they are inspecting the information. The articles ought to be set up regarding a matter that relates to the site content so as to speak to the specialty crowd. Such articles are frequently posted as projects on freelancing sites. Home workers can offer on these projects. let's have a look at highly in-demand freelancing skills.

Most Demanding Freelancing Skills

• Web and Mobile Development
• Internet Research
• Data Entry
• Web Designing 
• Accounting
• Graphics Designing
• Consultancy
• Recruiter
• Content Writer
• Editor

Let's have a look at top Freelancing job portals.

Most Popular Freelancing sites

1. Fiverr
2. Upwork
3. Freelancer.com
4. Envato Studio
5. PeoplePerHour
6. Toptal
7. Guru.com
8. DesignCrowd
9. Nexxt
10. DesignContest
11. TaskRabbit
12. crowdSPRING
13. Hireable
14. WriterAccess
15. 99Designs
16. Catalant
17. Bark
18. DesignHill
19. Skyword
20. Gigster

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Magento 2 Interview Questions and Answers

1. What is MVC Architecture?

The Model-View-Controller (MVC) framework is an architectural pattern that separates an application into three main logical components Model, View, and Controller. ... MVC separates the business logic and presentation layer from each other. It was traditionally used for desktop graphical user interfaces (GUIs).

2. Which command is used to enable or disable a Magento 2 module?

php bin/magento module:enable module_name

php bin/magento module:disable module_name

3. What technology does Magento 2 use?

Magento uses MySQL for database and PHP as a web server language.

Magento 2 uses PHP 7.0.2 up to 7.0.10

• 5.6.x;
• 5.5.x, for x>=22;
• 7.0.2 to 7.1.0, except for 7.0.5.
• 7.1.3+ 7.2.x (for Magento 2.3.0)
• 7.3 (for Magento 2.3.3)

For MySQL, it uses version 5.6 or 5.7.

1. Magento 2.0.x = MySQL 5.6 
2. Magento 2.1.x = MySQL 5.6 (For Magento 2.1.2 and higher, use MySQL 5.7) 
3. Magento 2.2.x  = MySQL 5.6, 5.7 
4. Magento 2.3.x  = MySQL 5.6, 5.7 

4. What is EAV?

The Entry, Attribute, Value model, also known as object-attribute-value or Open Schema, is a database or catalog management system that is used in Magento.

Entity–attribute–value model (EAV) is a data model to encode, in a space-efficient manner, entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest.

5. How can you write a custom module in Magento 2?

Say you the model name is ‘hosting’. You have to define it in app/code folder

It should be: app/code/VendorName/moduleName.

For example: app/code/MageHost/Hosting

Steps:

1. Create the folder of ‘hosting’ module
2. Create etc/module.xml file
3. Create etc/registration.php file
4. Enable the module

There are two possible locations for modules in Magento 2: the app/code folder and the vendor folder depends on your Magento installation.

Reasons Why Business Owners Should Go for PHP Web Development Services

Quick Development

A website developed on PHP doesn't prove a burden on the server. Since PHP Development uses its own memory space, it reduces the loading time. It processes everything fast and therefore, web applications like e-commerce, CRM, CMS, and forums are developed on PHP.

Higher Returns

Any businessman would count on excessive returns on funding. In a extremely aggressive enterprise surroundings, that you must seize the eye of tourists; as soon as they repeatedly go to your web sites, that you must convert them from guests to clients. Since PHP provides dynamic web site creation, you get extra guests in your web site. This implies excessive returns in your funding.

Support

If you have basic knowledge about PHP, you can easily improve your knowledge using guidelines and references available online. Chat with support groups, ask questions in forums and contact PHP Development support teams on the Internet. In addition, you have full access to the online library for more knowledge about PHP web development services. And remember, this support is available in different languages.

PHP Software is Easily Maintained and Updated

Due to easily decipherable syntax, PHP code can be freely modified and changed. It means, there are no problems with maintaining and updating PHP-based projects. They can be quickly and cost-effectively adjusted to innovative apps that enter the market and to the new business requirements. And due to open-source contribution, new functionality meeting the emerging needs of businesses pops up regularly and costs nothing. And since PHP code is written in a consistent and distinct manner, maintenance and support can be provided by any team, not obligatory the one which developed the project.

Security

The online business has a big disadvantage: viruses and malware. PHP gives you more security levels for your site, so you can easily protect your site from malicious attacks and viruses.

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