Functions PHP WordPress where is it

Learn how to use functions in PHP WordPress, with an example of how to find and use them.

Using WordPress Functions in PHP

Using WordPress functions in PHP can be a powerful way to extend the functionality of a WordPress site. WordPress functions allow developers to access and manipulate the data stored in WordPress and to modify the look and feel of the site. The WordPress core functions are all located in the /wp-includes/ directory. These functions are used to access the database, query the database, display content, and perform other tasks. They are the foundation of WordPress and must be used when developing for WordPress. For example, the get_posts() function retrieves an array of post objects from the database. The get_posts() function can be used to query the database for posts with specific parameters such as post type, category, tag, author, and more.

$args = array(
	'post_type' => 'post',
	'category' => 'news',
	'orderby' => 'date',
	'order' => 'DESC'
);
$posts = get_posts($args);

The get_the_title() function is used to get the title of a post. This function takes the ID of the post as an argument and returns the title of the post.

$post_id = get_the_ID();
$post_title = get_the_title($post_id);
echo 'The title of the post is: ' . $post_title;

The get_permalink() function is used to get the URL of a post. This function takes the ID of the post as an argument and returns the URL of the post.

$post_id = get_the_ID();
$post_link = get_permalink($post_id);
echo 'The link to the post is: ' . $post_link;

WordPress also provides functions to manipulate and display theme-specific content. These functions are located in the /wp-content/themes/ directory and are used to customize the look and feel of the site. For example, the get_header() function retrieves the header content from the active theme. The get_header() function can be used to add custom content to the header.

get_header();
echo '<div class="custom-header">';
echo '<h1>Custom Header Content</h1>';
echo '</div>';

The get_footer() function retrieves the footer content from the active theme. The get_footer() function can be used to add custom content to the footer.

echo '<div class="custom-footer">';
echo '<h2>Custom Footer Content</h2>';
echo '</div>';
get_footer();

WordPress provides a wide variety of functions that can be used to extend the functionality of a WordPress site. Many of these functions are located in the /wp-includes/ directory and are used to access and manipulate the data stored in WordPress. Other functions are located in the /wp-content/themes/ directory and are used to customize the look and feel of the site. WordPress functions are a powerful way to extend the functionality of a WordPress site.