PHP Interview Questions and Answers
PHP earlier stood for Personal Home Pages, but now it stands for Hypertext Pre-processor. PHP is a server-side scripting language that is used for building web pages and applications. We have just added more questions in our question bank for PHP interview questions. This language includes many Frameworks and CMS for creating large websites. Even a non-technical person can create web pages or apps using PHP CMS or frameworks. PHP supports various frameworks and CMS that are used to develop applications.
Before getting confused with the plethora of PHP developer interview questions, you need to ensure the basics. This question will help you to understand the core basics of PHP and make you even more confident enough to jump onto the advanced questions.
| Quick Facts About PHP | |
|---|---|
| What is the latest version of PHP? | 8.0.3, released on 4th March 2021 |
| Who is the developer of PHP? | Rasmus Lerdorf |
| What language does PHP use? | C language |
| PHP License | It is a BSD-style license which does not have the "copyleft" and restrictions associated with GPL. |
- It runs on various platforms, including Windows, Mac OS X, Linux, Unix, etc.
- It is compatible with almost all servers, including Apache and IIS.
- It supports many databases like MySQL, MongoDB, etc
- It is free, easy to learn and runs on the server-side.
- PHP can operate various file operations on the server
Note: This is a list of the most frequently asked PHP interview questions. Please have a good read and if you want to download it, it is available in a PDF format so that you can brush up your theoretical skills on this subject.
Top PHP Developer Interview Questions
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{
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else
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</table>
Many differences occur between the interface and abstract class in php.
- Abstract methods can declare with protected, public, private. But in case of Interface methods stated with the public.
- Abstract classes can have method stubs, constants, members, and defined processes, but interfaces can only have constants and methods stubs.
- Abstract classes do not support multiple inheritance but interface support this.
- Abstract classes can contain constructors, but the interface does not support constructors.
Note: Our PHP logical questions has been created by seasoned PHP experts. It shall help you to answer some of the most frequently asked questions during a job interview.
An SQL injection is a code injection malpractice or technique used to inject and execute malicious SQL statements to attack data-driven applications. It exploits the security vulnerability present in an application's software.
SELECT * FROM Users WHERE id = 10 OR 1=1;
Place this code in your htaccess file.
RewriteEngine On
RewriteCond %{HTTPS} on
RewriteRule (.*) http://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
Apache HTTP server is the most popular open source web server. Apache has been in use since the year 1995. It powers more websites than any other product.
- Sending mail using the PHP mail function with minimum parameters we tend to should use headers like MIME-version, Content-type, reply address, from address, etc. to avoid this case
- Did not use correct SMTP mail script like PHPmailer.
- Should not use website link in mail content.
It stands for PHP Extension and Application Repository. It is that the next revolution in PHP. It is used to install packages automatically.
The ionCube Loader is an advanced component used by developers on the server to run encoded files. It protects the source code. When our PHP code gets pre-compiled and encrypted and requires a separate PHP module to load it, ionCube PHP loader will be required at that scenario.
We can use document.formname.submit()
In PHP, the urlencode() function is one that can be conveniently used to encode any string before actually using it as part of the URL in a query. This function is a very efficient way to pass variables onto the next page. Whereas, the urldecode() function is used to decode the above-encoded string into a readable format.
Top 10 PHP Interview Questions
Here you will find the list of Top PHP interview questions, which were written under the supervision of industry experts. These are the most common questions and usually asked in every interview for the role of the PHP Developers.
- What are Design Patterns in PHP?
- What is the difference between abstract class & interface in PHP.
- What is traits & how it can we used?
- What is the use of .htaccess file?
- What is the difference between MyISAM and InnoDB?
- What is the difference between Public Private and Protected?
- What is Constructor and Destructor?
- What is final class and final method in PHP?
- What is a static member function?
- What is function Overloading and Overriding in PHP?