The article provides an overview of common functions in WordPress Theme programming. It explains the importance of knowing how to use functions to retrieve database data and display content on a website. The article lists popular functions such as the_title(), the_content(), is_home(), and get_template_part(). It also explains the difference between functions that have “get” in front of them and those that do not. The article concludes by encouraging readers to further explore additional functions on official WordPress documentation websites.
If you’re interested in delving into WordPress Theme programming, you’ll need to familiarize yourself with some common functions. The WordPress source code boasts an array of functions, but you don’t need to master them all – just focus on using the popular ones effectively.
Functions to get data in Database
To get content displayed on your browser, requests to the database are necessary. Here are some frequently used data retrieval functions you’ll encounter:
- the_title(): Retrieve the title of the article.
- the_content(): Retrieve the content.
- the_permalink(): Retrieve the URL.
- the_post_thumbnail(): Retrieve the image as a thumbnail.
- the_excerpt(): Retrieve a short description.
- the_category(): Display the category of the article.
When dealing with functions preceded by "get", like get_the_title() or get_permalink(), it’s essential to add "echo" in front. However, functions like the_title() and the_permalink() do not require any extra steps.
For example:
<?php the_title();?>and
<?php echo get_the_title();?>WordPress Conditional Functions
WordPress conditional functions help determine various query conditions, such as:
- is_home(): Checks if the query is for the home page.
- is_single(): Checks if the query is for an article.
- is_archive(): Determines if the query is for an archive page.
- is_search(): Validates whether the query is for a search.
For further information on Element Visibility Conditions in WordPress, check out this link.
Other popular functions in WordPress
Explore more functionality with these popular WordPress features:
- get_template_part(): Load a part of another file into the current file.
- add_theme_support(): Register to support a specific feature.
- get_search_form(): Access the search form function.
- add_image_size(): Register a new size for images.
- get_header(): Embed the header.php file.
- get_sidebar(): Embed the sidebar.php file.
- get_footer(): Embed the footer.php file.
- get_the_time(): Retrieve the time.
- get_the_date(): Retrieve the date.
- bloginfo(): Display information about the current web page.
- get_post_format(): Retrieve the slug format for a post.
- add_filter(): Hook a function or method to an existing action.
- add_action(): Hook a function to a specific action.
- get_search_query(): Get the contents of the WordPress search query variable.
In conclusion, these are just a few of the common functions within WordPress. To explore more, visit WordPress Codex or WordPress Developer Reference. There’s a vast array of functions waiting for you to discover and utilize in your WordPress journey.
