Using WordPress ‘category_exists()’ PHP function
The `category_exists()` function in WordPress is a helpful tool for checking if a category or subcategory exists within the database
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Using WordPress ‘block_header_area()’ PHP function
The `block_header_area()` function in WordPress is used to display the header block template part by printing it directly using PHP
Using WordPress ‘balanceTags()’ PHP function
Balances tags if forced to, or if the ‘use_balanceTags’ option is set to true.
Using WordPress ‘apply_filters()’ PHP function
Calls the callback functions that have been added to a filter hook.