PHP developers are the face of the virtual side of the company. Therefore it is essential to choose the best to represent your company with, especially on a vast platform that is being accessed by people from all over the world.

Portraying your company on online search engines is one of the popular marketing methods in business industry. The higher the ranking is the more increase you’ll see in raising brand awareness. And you can do it too;

If you are the person who’s responsible to interview PHP developers, then here are 7 questions to ask from them; regarding android app development, personal experience and area of expertise.

PHP evaluation question 1:

How to obtain IP address of the user?

This question is going to allow you to explore the creativity of the candidate, since there’s more than one way to acquire IP addresses. The candidate will have a vast array of possibilities to present you with and you’ll get a chance to test their versatility. The candidate can answer the question with an easier solution that is $_SERVER[“REMOTE_ADDR”];  ranging from that to writing x line scripts.

PHP evaluation question 2:

What are the significant inaccuracies in PHP and how are they different?

For that, you’ll be required to be clear about the types of main errors present within PHP:

• Notifications: Errors which occur during creating scripts. They mostly occur when certain variables have been entered wrongly. They’re simple errors for the most part that can be edited and fixed.
• Warnings: These errors are more crucial than notifications. Although they will not cause hindrance within the scripts, themselves. A good example would if you used a code that does not exist.
• Deadly: These are the most important errors, out of all. These errors terminate scripts upon occurring. A good example for a fatal error would be, accessing a site that does not exist; basically a non-existent file.

Having a thorough knowledge on errors is important, as they assist developers understand the processes of android app development, what to look out for and how to tend to it.

PHP evaluation question 3:

What are the 3 different scopes within PHP and how will you explain them?

• Private: This level of scope is only visible when accessed through its own class. Anyone and anywhere outside will not be able to access it.
• Public: The second level of scope is available to all. It is accessible through different classes and can be obtained easily.
• Safe kept: This scope is only visible to classes that are directly linked to it. For example parent classes and extended classes.

This is an important aspect for PHP developers as it shows their understanding on creating applications that breathe and live, it’s more than just writing codes. The developer is required to have a thorough understanding on accessibility of their work; know-how on scopes enables them to protect data within application and develop pathways through coding.

PHP evaluation question 4:

Define the term getters and setters and the reason for their significance?

Gettters and setters are ways to attain utility of variables, often private scopes. These are essential for application development as they allow a central position that is ideal to manage data before transferring it to the developer. With the incorporation of getter and setter, the PHP developer can constantly look into data and eventually pass it on for different functions. For example usernames; without a setter the developer will be bound to declare the username by hand rather than with an automated response. Setter and getter both assist with the form in which the data is being received as, they modify it in a format that is more effective.

This piece of information is very important for a PHP developer. They are often used in dealing with objects, especially those that will be added to the storage system. Due to high demand of PHP in web development and applications; developers tend to face superior levels of getters and setters at working environments. These are massive systems that are crucial for applications, therefore it is best to know about them from the very start.

PHP evaluation question 5:

What MVC stands for and does it do?

MVC’s full form is Model view controller, it’s responsible to look over data transferred to it, later on pass it on to the next system. MVC interprets data sent to it by the view, transferring it furthermore into the designated models that work differently in accordance to their systems. The models priority is to cater certain tasks, confined to a specific area of an application and its functions. They connect to the developers database and storage mediums and maintain business related results.

The view is transferred data given to the controller and portrayed to the viewer. In conclusion, knowing MVC patterns is essential for a PHP developer as they are being widely used in today’s age for applications and their functionalities.

PHP evaluation question 6:

Define SQL injections, how are they disabled and what are the right approaches to dealing with it?

SQL injections are ways to transform queries in SQL statements and transfer them to the data servers. Updated queries might provide a sneak peek of information such as passwords and usernames, which might cause hindrance at instances with intruders trying to hack into information.

To stop SQL injections from occurring one requires to check and remove user inputs. PHP can easily cause the developer to forget about this factor due to their efficient processes of accessing data. And inexperienced developers tend to miscalculate this a lot. However, there are other ways to manipulate through SQL that is through usage of cookies and files. The best way to prevent from this is to have backup statements at all places, working continuously.

It is best to not incorporate functions that have been disposed already but rather use PDO, since it enabled the developer to use other servers.

PHP evaluation question 7:

What PSR standards do you incorporate and why would you follow them?

One must know the ways to follow PSR since coding scale varies when it comes to developers and companies. Without it, making additions or reading another developer’s code can become a tricky task; as code structures depend on the developer themselves. PSR standardization can assist at formatting codes in a more comprehensive manner; a random developer would be able to help out at making changes and improving the application more easily this way. It will only cut down on confusions and entanglements and in certain cases, syntax errors too.

Conclusion

If you are searching for a PHP developer for your site, application or more; then I hope these 7 questions assist you at making the right choice. Someone who caters to all your needs and surpasses expectations by providing you with exceptional work.

Best of luck!