If you do not see the set featured image box beside the post editor in the WordPress admin panel to set the featured image of posts, your solution is here. Just copy/paste this code snippet to the function.php file of your theme.
add_theme_support function in WP will register a feature for the specified theme. Here are a few examples of using the add_theme_support() function in WordPress development.
Learn how to add a new section to the settings page of the WordPress admin panel with examples. In this WordPress tutorial, we’ll introduce the WordPress add_settings_section function and review its usage with examples.
Learn how to activate a plugin in WP using the activate_plugin function programmatically. Here we provided an example of using this function to activate a WP plugin.
The absint function in WordPress accepts a number and converts it to a positive integer. This function also converts a float number to a positive integer value. But what is the return if you pass Boolean or Array instead? Find the answer in my 7 examples of using absint() in WordPress development.
WordPress get_the_tags function is responsible for retrieving associated tags of a post. WordPress developers need to specify post ID to receive an array containing tag IDs, Names, Slugs in full-detailed term objects. Read this tutorial for general information about tagging, its usage, and testing the get_the_tags function in working examples.