What is WordPress function? Complete list of WordPress functions

Probably those who work with WordPress in the field of website design have heard terms like WordPress functions a lot. Now, many people may not know what the WordPress function is and what it is used for. In this article, we are trying to talk about WordPress functions while defining WordPress and its use, and then introducing a list of the most important WordPress functions. Therefore, if you also want to get information about this topic, I suggest you stay with us until the end of the article.

What is WordPress and what is it used for?

WordPress is one of the most common and easiest ways to build a website. Today, no one is not aware of the advantages of having a website, given that all businesses have gone virtual. Therefore, having a website to provide services and introduce and expand your business is one of the necessities. Many people may think that building and running a website is a very difficult and expensive job. But, thanks to the WordPress content management system, this is very simple and cost-effective. Today, more than 40% of the world’s websites are built with WordPress.

WordPress is a free, open-source, web-based content management system for setting up and building websites. This content system has many advantages and positive features, among which the following can be mentioned:

WordPress is free

WordPress is a website builder content management system that you can install completely free of charge and start your site with.

Ease of installation

One of the very positive features and benefits of the WordPress content management system is its simplicity and ease of installation so that you can install and activate it in less than 5 minutes. For its installation method, just search a little on the internet and follow the installation steps easily.

Easy and convenient to use

Another popular feature of WordPress is its ease of use. This means that you can easily design your site without knowing coding or programming knowledge. You can also use ready-made WordPress templates for more advanced and faster site design.

Another feature of WordPress is its constant updating. This system is constantly being updated according to the needs of its users and the advancement of technology so that it can meet all the needs of its audience. At the same time, it is necessary to remember that WordPress does not charge you for these updates.

Constantly updating WordPress

Another feature of WordPress is its constant updating. This system is constantly being updated according to the needs of its users and the advancement of technology so that it can meet all the needs of its audience. At the same time, it is necessary to remember that WordPress does not charge you for these updates.

Has free plugins

You can add many different features to your site with plugins. Many free plugins in WordPress add the right features to your site. Of course, many non-free plugins add more advanced features and functionality to your site.

Easy site optimization or SEO

Another advantage of WordPress that adds to its popularity is the presence of plugins that help you optimize your site for search engines. Among the most famous of these plugins, you can mention Yost SEO and RankMath plugins, which have a free versions. Of course, the non-free version of these plugins provides you with more features and capabilities.

WordPress open source

WordPress is completely open source.

Building all kinds of sites with WordPress

There is no limit to the types of sites WordPress can create. You can create all kinds of the store, news, educational, corporate, job search, photography, etc. sites with WordPress.

Now that we have reviewed WordPress and its features and benefits, we are going to answer the question, what are the functions of WordPress? Before answering this question, it should be said that WordPress is created by the PHP programming language (PHP) and WordPress functions are created by a series of PHP programming code pieces. Each WordPress plugin or theme uses WordPress functions to display its dynamic information. To better understand this issue, it is necessary to first explain what a function is in programming science.

What is a function in programming?

A function in programming is a piece of independent code that performs a specific task. The process of data in programming is that they receive a series of data and return the result after processing the data. The good feature of functions is that they are written once and can be used over and over again.

In simpler terms, a programmer writes a function and chooses a name for it so that later he can call the function by this name. Calling the function means that the task that the function is supposed to perform is performed and the result is returned. For example, you write a function that calculates the factorial of a number for you. In this case, you will find the answer to your question with a small piece of code and you don’t need to write a long program to calculate the factorial.

What is a WordPress function?

What is a WordPress function?

Considering that we said more than WordPress is written with PHP programming language. This programming language supports the function. So we have many functions in WordPress. Using WordPress functions, we can create any features we want in WordPress. Some developers may design these functions in the form of a plugin or theme, in which case all you need to do is download that plugin or theme and install it on your WordPress.

How should we use WordPress functions?

To use WordPress functions, it is necessary to be familiar with the WordPress programming language first. Learning the WordPress language is not a difficult task and with a search on the internet you can see all kinds of tutorials about it and in this way get to know the basic concepts of PHP programming. Now, to be able to use a pre-defined function in WordPress, you must first know the name of that function and then write the name of the function along with an open and closed parenthesis, this is called calling the function.

Where should we use WordPress functions?

If you are a WordPress developer, you can use WordPress functions in two places, one is in the WordPress plugin and the other is the WordPress template.

In a WordPress plugin, we may have a large number of PHP files that host PHP codes, including these WordPress functions. For a WordPress plugin, there must be a main document named after the plugin itself. Now, apart from that document, there can be other PHP files, all of which should be placed in the same main folder of the plugin.

An example of using functions in WordPress
An example of using functions in WordPress

But for a WordPress theme, there is a main document called functions.php, where WordPress functions should be placed in that document. Now, apart from this document, you can create other files that have WordPress functions with PHP extension. But the main thing is that all of them should be embedded in the main functions.php document, which is located in the root path of the template folder. Otherwise, WordPress cannot know how to call these functions.

Of course, you need to know that besides these functions that are already written and we call them. We can also write our arbitrary functions.

What is the use of WordPress functions?

The functions defined in WordPress are defined to prevent repetition and create errors and problems in programming, and these functions help you to access different parts of the WordPress core and make changes and control it in a standard way. In the rest of the article, we will introduce essential and frequently used functions of WordPress.

Complete list of WordPress functions

Now that we are familiar with WordPress functions, let’s review a list of WordPress functions together:

Basic and basic functions of WordPress

In this section, we introduce functions that automatically print and display something.

 display the title of the website
 
 (display a short introduction of your site (description of the site
 
 Display admin email address
 
 display website address
 
 Display WordPress site URL
 
 display the URL of the CSS file in the active shell folder    
 
 Display the address of the active shell folder
 
 Display the site atom feed address
 
 Display the website's RSS address
 
 display the website's RSS 2 address
 
 display the RDF address of the site
 
 Display the Unicode used on your website
 
 Display the active language used on your website
 
 Display the direction used on your website
 
 Display the WordPress version of your website
 
 Display the title of the page being displayed
 
 Display the search form on the site
 
 Display the searched text after searching the site
 
 Display the complete list of tags used on the website
 
 Display the description of a specific tag - instead of ID, enter the tag ID
 
 Display the name of the tag that we clicked on and entered the tag page
 
 Display the name of the article that we clicked on and entered the page
 
 Display the name of the category that we clicked on and entered its page
 
 Show unique link
 
 Display the calendar on the website

Functions of drop-down menus and lists

In this section, we will introduce the list of functions that display simple and cascading lists.

 display topics in the form of a drop-down menu
 
 display pages in the form of a drop-down menu
 
 Show users in the form of a drop-down menu
 
 Display the website archive list
 
 Display the list of website authors
 
 Display a list of website links
 
Note: By default, the possibility of inserting a link in WordPress is disabled, to enable this possibility, you must add the following code in your theme's function file.
 
add_filter( 'pre_option_link_manager_enabled', '__return_true' );
 

 
 Display the list of website topics
 
 Display the list of website comments
 
 Display the list of website tabs
 
 Display the list of website pages

Entry and exit functions

In this section, we show the list of functions that are used to enter and exit users with different site roles.

 Display the login form to the website
 
 display the address of the login section of the site
 
 Display the exit address from the website
 
 display the address of the forgotten password section of the website
 
 Display the address of the registration section on the website
 
 Display the login/exit link automatically on the website
 

 
Conditional function for two conditions of login as guest or login with username

Writing functions

In the list below, we have functions related to displaying content and presenting them on pages to users.

Note: You must put the following functions in the WordPress loop.

Loop means a conditional tag that must contain the posts of a WordPress site, otherwise, the posts cannot be displayed.

                           Location of writing functions
 Display the help to go to the next and previous page
 
 Show link to previous post
 
 show the link to the next post
 
 Display the list of topics related to the current post
 
 Display the unique link of the desired page
 
 Display the title of the current post
 
 Display the contents of the current post
 
 Brief display of the contents of the displayed post
 
 Display the time of the post being displayed
 
 Display the current post insertion date
 
 Display ID of the currently displayed post
 
 Display the number of posts by the author of the desired post
 
 Display the name of the author of the desired post
 
 Display the login link to the single page of the post being displayed
 
 Display tags of the currently displayed post
 
 Display the number of comments given on the post being displayed
 
 single.php show the comments section - must be inside the file
 
 Display the attribute value of the title of the post being displayed

Knuckle functions

In the list below, we show you the codes related to the index image of each article, post, etc. in WordPress.

First, put the following function in the functions.php file and then use the following functions.

echo add_theme_support( 'post-thumbnails' );
 Show thumbnail for each post or tab - default size 150x150
 
 Show thumbnail for each post or tab - default size 300x300
 
 Show thumbnail for each post or tab - default size 640x640
 
 display the thumbnail of each post or page in original size
 
In addition, the above 4 functions are for display in standard sizes. To cut the uploaded photo and display it on the website, you must do the following.
 
1- Add the following code in the function file
 

 
if (function_exists('add_image_size')):
add_image_size('your-name',width,height,true);
endif;
 

 
2- Put the following code to display the thumbnail
 

tip! In the above codes instead of:

width: photo width (number)

height: photo height (number)

And instead of your name: put your desired name.

List functions and menus

In the list below, we show you the functions that are related to the list and resources in WordPress.

View website listings
 
 'mabnawp-Nav', 'menu_class' => 'navbar' ) ); ?>
 
Note: This feature is disabled by default, and to enable it, you must put the following function in the function file.
 
function register_my_menu() {
  register_nav_menu('mabnapw-Nav',__( 'mabnawp-Nav' ));
}
add_action( 'init', 'register_my_menu' );

tip :

Start a navbar class in CSS and start designing your list.

Placement and inclusion functions

In this list, you can see the functions related to the embedding functions in WordPress.

Include header Include footer Include sidebar

Conclusion

WordPress has thousands, thousands of functional functions that are often used in WordPress core. Some of these functions are designed and implemented for the main and important functions of WordPress, and some others are designed and implemented for use by designers of WordPress templates and plugins. In this article, we talked to you completely about WordPress functions and its services. And finally, we introduced the most important and practical functions of WordPress. I hope this article was useful for you.

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