Using WordPress ‘backslashit()’ PHP function
Adds backslashes before letters and before a number at the start of a string.
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Using WordPress ‘add_option_update_handler()’ PHP function
The `add_option_update_handler()` function in WordPress is used to register a setting and its sanitization callback
Using WordPress ‘add_comment_meta()’ PHP function
The `add_comment_meta()` function in WordPress allows developers to add metadata fields to comments on their website
Using WordPress ‘feed_content_type()’ PHP function
The `feed_content_type()` function returns the content type for a specific feed type in WordPress using PHP