Wordpress developer interview questions

WordPress is an open source CMS written in PHP.

WordPress.com (fully hosted), focus on your beautiful content, and let us handle the rest. it has limitations when it comes to plugin, theme customization etc WordPress.org (self-hosted), get your hands dirty, and host your website yourself. it provides more flexibility when it comes to plugin, theme customization etc

1. WordPress is a free and open-source blogging tool and a content management system (CMS) based on PHP and MySQL. Features include a plugin architecture and a template system.
2. WordPress was used by more than 23.3% of the top 10 million websites as of January 2015.As of February 2016, WordPress is used by 59.1% of all the websites whose content management system we know. This is 25.8% of all websites.

Following are some of the important features that we think that you’ll love.

1. Simplicity
2. Easy Installation and Upgrades
3. Flexibility
4. User Management
5. Media Management
6. Easy Theme System
7. Extend with Plugins
8. Built-in Comments
9. Search Engine Optimization
10. Multilingual
11. Importers
12. Community
13. Publish with Ease
14. Publishing Tools

You may also like Core PHP Interview Questions

For developers, WordPress Have lots of goodies packed under the hood that you can use to extend WordPress in whatever direction takes your fancy.

1. Plugins
2. Themes
3. Application Framework
4. Custom Content Types
5. The Latest Libraries

WordPress is that it's easy to use and flexible enough for just about anything. That's the main reason why WordPress has grown so much in popularity. According to a recent survey, WordPress powers 22.5% of all websites on the internet. Let's take a look at why you should use WordPress.

1. WordPress is Free
2. Easy to Use and Learn
3. Extendable by Using Themes and Plugins
4. Search Engine Friendly
5. Easy To Manage
6. Safe and Secure
7. WordPress Can Handle Different Media Types

WordPress can be used in many different ways. It is open to possibilities. You can use WordPress as the following:

1. Blog
2. CMS
3. Gallery
4. Portfolio
5. Rating Website
6. E-Commerce
7. Media Site
8. Membership Site

Plugins are ways to extend and add to the functionality that already exists in WordPress.

. Plugins then offer custom functions and features so that each user can tailor their site to their specific needs.

1. Create a unique name
2. Create the plugin's folder
3. Create a sub-folder for PHP files, translations and assets
4. Create the main plug-in file and fill in header information
5. Create activation and de-activation functions
6. Create an uninstall script
7. Create a readme.txt file
8. To detect paths to plugin file use proper constants and functions

wp_title() function is for use outside "The Loop" to display the title of a Page.

the_title() on the other hand is used within "The Loop".

You can secure your wordpress website by using following things:

1. Use Secure Hosting
2. Don't Use Nulled Themes
3. Install a WordPress Security Plugins
4. Always Use Strong Password
5. Disable File Editing
6. Install SSL Certificate
7. Change your WP Login URL
8. Limit Login Attempts
9. Update your WordPress version

You may also like MySQL Interview Questions

By default, wp_ is the table prefix, if required you can change it at the time of installation. WPML Multilingual Plugin.
URL: https://wpml.org/

1. Drupal
2. Joomla

Open the wp-config.php file and WP_DEBUG set the false.

These are the function used when you website multilingual, each of this function has two parameters.

1st parameter: String which you want to convert from one language to another.

2nd parameter: domain name.

You can get the page name from below of two? Hooks allow the user to create a WordPress theme or plugin with shortcode without changing the original files.

Following are two types of hooks

1. Action hooks: This hooks allow you to insert an additional code.
2. Filter hooks: Filter hooks will only allow you to add a content or text at the end of the post.

1) Actions hooks:.

1. has_action()
2. add_action()
3. do_action()
4. do_action_ref_array()
5. did_action()
6. remove_action()
7. remove_all_actions()

2) Filters hooks .

1. has_filter()
2. add_filter()
3. apply_filters()
4. apply_filters_ref_array()
5. current_filter()
6. remove_filter()
7. remove_all_filters()

Go to WordPress: admin -> Tools -> Import

1. wp_nav_menu() :- Displays a navigation menu.
2. is_page() :- To check if this is page OR NOT, will return boolean value.
3. the_title():- Displays the title of the post in website.
4. the_content():- Displays the contents of the post in website.
5. get_the_excerpt() :- Copy the excerpt of the post into a specified variable.
6. in_category() :- Check if the specified post is assigned to any of the specified categories OR not.

Following are main files which used in wordpress

1. index.php :- for index page.
2. search.php :- For display the search result page.
3. single.php :- for single post page.
4. page.php :- display the static pages.
5. category.php :- Display the category page.
6. tag.php :- For display the tags page.
7. author.php :- For display author page.
8. taxonomy.php :- For display the taxonomy archive.
9. attachment.php :- For managing the single attachments page.
10. header.php :- For managing top part of page.
11. footer.php :- For manage bottom part of pages.
12. archive.php :- For archive page display.
13. 404.php :- For display 404 error page.

add_shortcode

It has two parameter, first is shortcode name and second callback function.

#Example:

You can use following syntax: Ref Link: https://codex.wordpress.org/Function_Reference/add_shortcode