Don't forget to test your skills with frequently asked PHP interview questions before you leave for a PHP Developer jobs in Pakistan interview. In this complex digital world, PHP jobs are high in demand. Sometimes, you know everything about this language, but when a recruiter asks a simple question, you don't know how to arrange your words or describe the answer of PHP interview questions in the right way. It is the worst-case scenario, and you should avoid it at any cost by tightening all the loose screws. 

Test your Skills with 12 Most Frequently asked PHP Interview Questions and Answers.

Let’s start checking them all one by one.

1. What is PHP?

You might be wondering why so fundamental question, but the thing is it is among the most common questions asked by almost 7 out of 10 PHP interviewers. That's why to recall all the basics.

PHP stands for Hypertext Preprocessor. It is a widely used server-side scripting language for the development of web applications. It helps the developer communicate easily with the database server, handle sessions and map out versatile content only by embedding HTML

2. What was the old name of PHP?

It's indeed the most straightforward question in a PHP interview, but when you don't know the answer, then it turns into a tricky one.

Ans: Personal Home Page

3. Who is named as the Father of PHP?

Rasmus Lerdorf .. read a little about him

After some common and straightforward questions, an interviewer will start asking some technical PHP interview questions. So, just don't get surprised if he does so. Stay calm and attentive. One thing you need to understand that PHP questions might be a part of your interview when you apply for e-commerce developer jobs. Because this programming language is a must-have thing in the development field.

How to become a front-end Web Developer in Pakistan in 9 Easy Steps

4. What is the main difference between mysqli_connect and mysqli_pconnect?

mysqli_pconnect() is a function which a developer uses commonly for establishing a persistent connection with the database. At the end of the script, this connection doesn't terminate.

In contrast, mysqli_connect() function is used for starting a search of any existing persistence connection first. In case there is no current connection, then it will create a new database connection. But it will terminate at the end of the script. 

5. What is the way of sending the HTTP header to the client in PHP?

Header () function is used to send raw HTTP header to a client, and after that, any other output is inserted.

Sample code: 

Header ('Location:http://www.your_domain/');

6. What is a persistent cookie, how to declare it?

As the name shows, it is a kind of cookie file which stores permanently in a browser. This insecure file is used for keeping track of visitors for an extended period. 

You can declare it in the following manner.

setccookie ("cookie_name", "cookie_value", strtotime("+2 years");

learn more about Persistence cookie setting.

7. Which library is used in PHP to do various types of Image rotation?

When you want to do image work in PHP, then you can do it via the GD library. Image work could be setting an image thumbnail, image cropping or rotation.
 

8. What is "print" in PHP?

You can output a string through PHP print which is a language construct. Unlike a function which requires the use of parentheses, copy doesn't need them with the argument list. 

Syntax: int print (string $arg)

9. What is the variable in PHP and how you can declare it?

A PHP variable is the name of a place that is going to keep data. It's like a temporary storage space. 

Syntax: $vriableName=value;

It is among the most common PHP interview questions, so make sure that you know how to answer it right and with exact syntax.

10. What are loops in PHP?

There are four different kinds of loops you can create in PHP such as for, for each, while, and do-while.

11. What is the array in PHP?

When you need to store many different kinds of values in a single value, then the array proves helpful. It lets you organize maps of different pairs of keys and values. The collection of data types related to a unique value can be collected through it. Don’t forget to understand Array in PHP.

12. When you name a PHP variable, then what rules you follow?

The name of a variable must start with a letter or underscore character. You can't use characters in the name of a variable. However, you can use letters, numbers, and underscores in a variable name.

Wrap up

Finally, you got a quick look at the 12 most frequently asked PHP interview questions and answers. I''m sure when you are going to give an interview for PHP developers jobs in Pakistan then you won't hesitate; since you already know it all. PHP interview questions might seem basic, but when you check them one-day before an interview, then you keep them handy in your mind. This quick checking proves fruitful when interviewers like your quick answers with proper syntax, example or sample. 

Best of Luck!

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• 27 Common Interview Questions to Practice
• 4 Popular Interview Techniques
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