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PHP & WordPress Developer Online Test

The PHP & WordPress Developer online test uses scenario-based MCQ questions to evaluate a candidate's ability to build responsive WordPress websites (blogs, e-commerce, static sites) and customize them by creating and installing custom themes, widgets and plugins. The code-tracing questions evaluate HTML/ CSS basics, JavaScript basics, PHP basics and understanding of the inner workings of WordPress for fixing and troubleshooting. The test has coding questions to evaluate hands-on programming knowledge.

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Screen candidates with a 45 mins test

Test duration:  45 mins
Difficulty level:  Moderate
Availability:  Ready to use
Questions:
  • 3 HTML/CSS MCQs
  • 5 WordPress MCQs
  • 3 JavaScript MCQs
  • 3 PHP MCQs
  • 3 jQuery MCQs
  • 1 PHP Coding Question
Covered skills:
Installing WordPress on self-hosted servers
Converting Bootstrap templates to WordPress theme
Navigate around the WordPress core
Understanding of plugin and theme architecture
Customizing WordPress theme (plugins; widgets)
Managing updates and securing WordPress sites
Database queries to create tables
Optimizing WordPress sites for SEO
Basics of HTML/ CSS
Basics of JavaScript and PHP
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Use the PHP & WordPress Developer Test to shortlist qualified candidates

The PHP & WordPress Developer Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Able to install and configure WordPress on self-hosted servers
  • Proficient in converting Bootstrap templates to WordPress themes
  • Skilled in navigating around the WordPress core
  • Deep understanding of plugin and theme architecture
  • Ability to customize WordPress themes using plugins and widgets
  • Competence in managing updates and securing WordPress sites
  • Proficient in database queries to create tables
  • Adept in optimizing WordPress sites for SEO
  • Thorough understanding of HTML and CSS basics
  • Familiarity with JavaScript and PHP basics
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Screen candidates with the highest quality questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 15,000+ questions. The actual questions on this PHP & WordPress Online Test will be non-googleable.

🧐 Question

Medium

Custom WordPress Shortcode
Shortcodes
Solve
You're creating a custom WordPress shortcode that users can insert into their posts and pages to display a promotional banner. Your initial PHP code is as follows:
 image
A user inserts your shortcode into a post like this:
 image
However, when the user previews the post, the content inside the `[promo-banner]` shortcode isn't displayed. Instead, the user sees the shortcode itself.

What change can you make to fix this issue?
A: Replace `'promo-banner'` with `'[promo-banner]'` in the `add_shortcode` function.
B: Replace `'promo-banner'` with `'[promo-banner]'` in the shortcode inserted into the post.
C: Change the `promo_banner_shortcode` function to accept only one parameter.
D: Use `do_shortcode` function to process the `$content` inside the `promo_banner_shortcode` function.
E: Replace `$content` with `$atts['content']` in the `promo_banner_shortcode` function.

Medium

Iteration in WordPress Plugin
Asynchronous JavaScript
Solve
You're developing a WordPress plugin where you need to fetch comments for a list of posts from a WordPress database using AJAX. The JavaScript code is as follows:
 image
The processComments function processes the comments for other operations and is working as expected.

However, when running the code, you notice that the console logs for fetched comments don't appear in the order of the post IDs. Instead, the logs appear in a seemingly random order each time.

What change can you make to ensure the comments are fetched and processed in the order of the post IDs?
A: Use a traditional for loop instead of forEach.
B: Use setTimeout to delay the execution of fetchComments.
C: Use sort on postIDs before calling forEach.
D: Change forEach to map and use Promise.all.
E: Make processComments function asynchronous and await it in the forEach loop.

Medium

Responsive load
Optimization
Solve
Here’s the code snippet of interest from a client's WordPress code:
 image
 image
You are reviewing the client's code and have to make recommendations to improve speed of the WordPress site. Which of these are good recommendations?
A: Cache the website to improve the site but need to move the responsive logic to CSS. The conditional logic might not be cached if the cache provider does not trigger the conditionals

B: Cache the website to improve the site. No need to move the responsive logic to CSS

C: jQuery is very commonly loaded on live sites multiple times due to poorly written plugins/themes. Ensure required JS files are enqueued only once and when they are needed

D: CSS in <head> file will affect the speed of the site since the entire CSS file has to be loaded before rendering the site. It is advised to load only the CSS that is mandatory in the <head> and move the rest of the CSS to the later portions of the HTML

Medium

Shortcode Development in WordPress
Shortcodes
WP_Query
Loop
Solve
You're developing a WordPress plugin that provides a shortcode to display the latest posts. The shortcode is [latest-posts count="3"], where the "count" attribute determines the number of latest posts to display. 

Your initial PHP code is as follows:
 image
You test the shortcode on a page and find that the page content following the shortcode doesn't display.

What change can you make to fix this issue?
A: Use `return $query->have_posts();` instead of `$query->the_post();`.
B: Use `wp_reset_query();` after the while loop.
C: Use `the_content();` after the while loop.
D: Use `wp_reset_postdata();` after the while loop.
E: Use `return $output;` before the while loop.

Medium

WP REST API
REST API
HTTP Requests
JSON Response
Solve
You're developing a custom WordPress plugin to fetch and display a list of posts using the WordPress REST API. Your initial JavaScript code is as follows:
 image
This code works fine when the website URL is `http://localhost/wordpress`. However, when you move your website to a different domain (for example, `http://example.com`), the list of posts doesn't display.

What change can you make to fix this issue?
A: Replace `/wp-json/wp/v2/posts` with `http://example.com/wp-json/wp/v2/posts`.
B: Replace `/wp-json/wp/v2/posts` with `http://localhost/wordpress/wp-json/wp/v2/posts`.
C: Use `wp_localize_script` to pass the website URL from PHP to JavaScript, and prepend it to `/wp-json/wp/v2/posts`.
D: Use `admin_url('admin-ajax.php')` to replace `/wp-json/wp/v2/posts`.
E: Use `site_url('/wp-json/wp/v2/posts')` to replace `/wp-json/wp/v2/posts`.

Easy

Background Properties
Solve
Consider the following shorthand CSS example:

background: #f7f7f7 url(jolie.jpg) no-repeat scroll 0px 0px;

Which of the following show the individual background properties represented by the shorthand:
 image

Easy

Colorful sentences
Solve
Our intern is writing a colorful blog post, and has written the following code. What colors will the sentences be?
 image
A: Sentence 1 will be gray, Sentence 2 will be pink.
B: Both sentences will be gray.
C: Sentence 1 will be pink, Sentence 2 will be gray.
D: Both sentences will be pink.
E: The code does not make sense; will throw an error.

Easy

Links
Solve
In the following HTML, what will be the color of link with class "mark"
 image

Medium

Let's Hack
CSS Property
Solve
Consider the following HTML and CSS:
 image
 image
Which additional CSS rule(s) will render the following image? Choose ALL that apply.
 image
A:
div{
  flex-direction : column;
  align-items : center;
}
B:
div{
  flex-direction : row;
  align-items: center;
}
C:
div{
  flex-direction: column;
  justify-content: center;
}
D:
div{
  flex-direction: row;
  justify-content: center;
}

Medium

Async Await Promises
Promises
Async-Await
Solve
What will the following code output?
 image
A: 24 after 5 seconds and after another 5 seconds, another 24
B: 24 followed by another 24 immediately
C: 24 immediately and another 24 after 5 seconds
D: After 5 seconds, 24 and 24
E: Undefined
F: NaN
G: None of these

Medium

Bitcoin prices
Axios
Promises
Solve
Review the following JavaScript code and pick the correct options: 
 image
Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?

Medium

My Module
Scope
Solve
What will the output of the following JavaScript code be?
 image
 image

Medium

Promise Resolve
Promises
Async-Await
Solve
What does the following code output? 
 image

Easy

Throw, Try, Async
Promises
Async-Await
Solve
What does the following JS code output?
 image

Medium

Dynamic Function Calls
Arrays
Strings
Functions
Solve
Consider the following PHP pseudo code:
 image
The processArray function processes the $data array based on the transformation operations defined in the $operations array. The operations array dictates which transformation function to call for each sub-array key. What will be the output of the above code?
 image

Hard

Alter and Change
OOPs
Solve
What does the following code output?
 image

Hard

Exceptions
Exceptions
Solve
What does the following code output?
 image

Easy

PDO MySQL
Database Connections
Solve
Consider the following table data and PHP code. What is the result?
 image

Medium

Session Management and Object Serialization
Sessions
Serialization
Solve
Consider the following PHP script:
 image
Assuming you run the script twice in a row without clearing the session data, what will be the output on the second run?

Easy

Registration Queue
Logic
Queues
Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.
For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.
⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

Medium

Visitors Count
Strings
Logic
Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 
Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
‘W’ has the highest count, then ‘C’, then ‘M’. 
⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’.
- If any of them have the same count, the output should follow this order - M, W, C.
🧐 Question🔧 Skill

Medium

Custom WordPress Shortcode
Shortcodes

2 mins

WordPress
Solve

Medium

Iteration in WordPress Plugin
Asynchronous JavaScript

3 mins

WordPress
Solve

Medium

Responsive load
Optimization

3 mins

WordPress
Solve

Medium

Shortcode Development in WordPress
Shortcodes
WP_Query
Loop

2 mins

WordPress
Solve

Medium

WP REST API
REST API
HTTP Requests
JSON Response

2 mins

WordPress
Solve

Easy

Background Properties

2 mins

HTML/CSS
Solve

Easy

Colorful sentences

2 mins

HTML/CSS
Solve

Easy

Links

2 mins

HTML/CSS
Solve

Medium

Let's Hack
CSS Property

3 mins

HTML/CSS
Solve

Medium

Async Await Promises
Promises
Async-Await

2 mins

JavaScript
Solve

Medium

Bitcoin prices
Axios
Promises

2 mins

JavaScript
Solve

Medium

My Module
Scope

2 mins

JavaScript
Solve

Medium

Promise Resolve
Promises
Async-Await

2 mins

JavaScript
Solve

Easy

Throw, Try, Async
Promises
Async-Await

2 mins

JavaScript
Solve

Medium

Dynamic Function Calls
Arrays
Strings
Functions

2 mins

PHP
Solve

Hard

Alter and Change
OOPs

2 mins

PHP
Solve

Hard

Exceptions
Exceptions

2 mins

PHP
Solve

Easy

PDO MySQL
Database Connections

2 mins

PHP
Solve

Medium

Session Management and Object Serialization
Sessions
Serialization

2 mins

PHP
Solve

Easy

Registration Queue
Logic
Queues

30 mins

Coding
Solve

Medium

Visitors Count
Strings
Logic

30 mins

Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Custom WordPress Shortcode
Shortcodes
WordPress
Medium2 mins
Solve
Iteration in WordPress Plugin
Asynchronous JavaScript
WordPress
Medium3 mins
Solve
Responsive load
Optimization
WordPress
Medium3 mins
Solve
Shortcode Development in WordPress
Shortcodes
WP_Query
Loop
WordPress
Medium2 mins
Solve
WP REST API
REST API
HTTP Requests
JSON Response
WordPress
Medium2 mins
Solve
Background Properties
HTML/CSS
Easy2 mins
Solve
Colorful sentences
HTML/CSS
Easy2 mins
Solve
Links
HTML/CSS
Easy2 mins
Solve
Let's Hack
CSS Property
HTML/CSS
Medium3 mins
Solve
Async Await Promises
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Bitcoin prices
Axios
Promises
JavaScript
Medium2 mins
Solve
My Module
Scope
JavaScript
Medium2 mins
Solve
Promise Resolve
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Throw, Try, Async
Promises
Async-Await
JavaScript
Easy2 mins
Solve
Dynamic Function Calls
Arrays
Strings
Functions
PHP
Medium2 mins
Solve
Alter and Change
OOPs
PHP
Hard2 mins
Solve
Exceptions
Exceptions
PHP
Hard2 mins
Solve
PDO MySQL
Database Connections
PHP
Easy2 mins
Solve
Session Management and Object Serialization
Sessions
Serialization
PHP
Medium2 mins
Solve
Registration Queue
Logic
Queues
Coding
Easy30 minsSolve
Visitors Count
Strings
Logic
Coding
Medium30 minsSolve

Test candidates on core PHP & WordPress Developer Hiring Test topics

Installing WordPress on self-hosted servers: This skill involves the process of setting up and configuring a WordPress installation on a server. It includes tasks such as downloading the WordPress files, creating a database, and configuring the necessary settings. Measuring this skill in the test helps assess a candidate's ability to properly install and set up a WordPress site, which is an essential foundation for any WordPress developer.

Converting Bootstrap templates to WordPress theme: This skill revolves around taking a pre-designed website template built with Bootstrap and converting it into a fully functional WordPress theme. It involves understanding the structure of a WordPress theme, integrating the template's HTML and CSS into the theme files, and making the necessary adjustments to ensure proper functionality. Measuring this skill helps evaluate a candidate's ability to work with existing designs and convert them into WordPress themes.

Navigate around the WordPress core: This skill refers to a candidate's ability to navigate and work within the WordPress core files, including the main functions.php file, template files, and other essential files. It includes understanding the file structure, locating and editing specific sections of code, and leveraging WordPress functions and hooks. Testing this skill helps assess a candidate's familiarity and efficiency in working with the WordPress core.

Understanding of plugin and theme architecture: This skill involves comprehending the architecture and structure of plugins and themes in WordPress. It includes understanding how to create and organize files and directories, using specific naming conventions, implementing hooks and filters, and properly integrating with the WordPress system. Assessing this skill helps determine a candidate's knowledge and proficiency in developing plugins and themes that follow best practices and adhere to WordPress standards.

Customizing WordPress theme (plugins; widgets): Customizing a WordPress theme involves making modifications to the appearance, functionality, and behavior of a theme. This skill entails working with plugins, widgets, and code changes to achieve the desired customizations. Evaluating this skill in the test helps gauge a candidate's ability to implement customizations effectively, enhancing the visual appeal and user experience of a WordPress site.

Managing updates and securing WordPress sites: This skill focuses on a candidate's knowledge and expertise in managing updates and securing WordPress sites. It covers tasks such as keeping WordPress core, plugins, and themes up to date, implementing security measures, and ensuring the site's protection against vulnerabilities and attacks. Evaluating this skill helps assess a candidate's ability to maintain and safeguard WordPress sites, ensuring their stability, reliability, and security.

Database queries to create tables: This skill involves using database queries to create tables in WordPress. It includes understanding the structure and syntax of SQL queries, creating tables with the appropriate fields and data types, and properly integrating them into the WordPress database. Assessing this skill helps determine a candidate's ability to work with databases in WordPress, which is crucial for storing and retrieving data efficiently.

Optimizing WordPress sites for SEO: This skill revolves around optimizing WordPress sites for search engine optimization (SEO). It includes tasks such as configuring permalinks, optimizing meta tags, improving site speed and performance, and implementing other SEO best practices. Measuring this skill helps evaluate a candidate's ability to optimize WordPress sites for better visibility and ranking in search engine results.

Basics of HTML/CSS: This skill encompasses the basic understanding and proficiency in HTML and CSS, which are fundamental web development languages. It involves knowledge of HTML tags, attributes, and structure, as well as CSS selectors, properties, and styling techniques. Assessing this skill helps determine a candidate's foundation in front-end development, essential for creating and customizing WordPress themes and templates.

Basics of JavaScript and PHP: This skill focuses on the basic understanding and familiarity with JavaScript and PHP languages. It includes knowledge of JavaScript syntax, DOM manipulation, and basic scripting concepts, as well as familiarity with PHP syntax, variables, functions, and control structures. Testing this skill helps evaluate a candidate's ability to work with client-side and server-side scripting, which are crucial for building dynamic and interactive features in WordPress.

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Have questions about the PHP & WordPress Developer Hiring Test?

What roles can I use the PHP & WordPress Developer Test for?

Here are few roles for which we recommend this test:

  • PHP Developer
  • WordPress Developer
  • Senior WordPress Developer
  • Web Developer
  • Full-Stack Developer
  • Web Designer
  • Web Application Developer
Can I combine the PHP & WordPress test with JavaScript questions?

Yes, recruiters can request a custom test that combines PHP & WordPress with JavaScript questions. For more details, check out our JavaScript Online Test.

How to use the PHP & WordPress Online Test in my hiring process?

This test can be used as a pre-screening tool at the beginning of your recruitment process. You can include a link to the assessment in your job post or invite candidates directly by email. It's an effective way to identify skilled candidates early.

What are the main Web Development tests?
Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

What is the PHP & WordPress Online Test?

The PHP & WordPress Online Test assesses a candidate's knowledge and skills in PHP, WordPress, HTML/CSS, JavaScript, and jQuery. It is used by recruiters to evaluate potential hires for web development roles involving WordPress and PHP development.

What topics are covered in the PHP & WordPress Online Test?

The test covers:

  • Installing WordPress on self-hosted servers
  • Converting Bootstrap templates to WordPress themes
  • Understanding plugin and theme architecture
  • Customizing WordPress themes and plugins
  • Basics of HTML/CSS, JavaScript, and PHP.
Can I test PHP & Laravel together in a test?

Yes, you can test PHP & Laravel together. This is recommended for roles requiring expertise in both. Check out our PHP & Laravel Test.

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

What is the cost of using this test?

You can check out our pricing plans.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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