How to delete blog options in WordPress multisite
The delete_blog_option function in WordPress is used to delete a specific option from the options database table for a specific blog on a WordPress multisite installation.
This function can be useful when you need to remove a specific setting or configuration option for a particular blog within a multisite network, without affecting other blogs.
Parameters Accepted by WordPress delete_blog_option Function
The delete_blog_option function in WordPress accepts the following parameters:
$id(int, required): A blog ID. This can be null to refer to the current blog.$option(string, required): The name of the option to remove. This value is expected to not be SQL-escaped.
Value Returned by WordPress delete_blog_option Function
The delete_blog_option function returns a boolean value. It returns true if the option was successfully deleted, and false otherwise.
Examples
How to delete a blog option
Below is an example of how to use the delete_blog_option function to delete a specific option for a WordPress blog.
// Delete the 'example_option' from the current blog
delete_blog_option( get_current_blog_id(), 'example_option' );
This code snippet uses the delete_blog_option function to delete the option named ‘example_option’ from the current WordPress blog.
Example 3: Conditional Deletion of an Option
$blog_id = 4;
$option_name = 'temporary_feature_flag';
if (get_blog_option($blog_id, $option_name)) {
delete_blog_option($blog_id, $option_name);
echo '<p>Option deleted successfully.</p>';
} else {
echo '<p>Option does not exist or was already deleted.</p>';
}
This example first checks if the option temporary_feature_flag exists for the site with an ID of 4 using get_blog_option(). If the option exists, it is deleted with delete_blog_option(). This approach is useful for scenarios where you need to ensure that an option is only deleted if it currently exists, avoiding unnecessary function calls.
Conclusion
In conclusion, the delete_blog_option function is a valuable utility for managing blog options in WordPress. It provides a simple and efficient way to delete specific options associated with a particular blog, giving developers more control over their data and settings. By understanding how to properly use this function, developers can ensure their WordPress sites are running smoothly and efficiently. With its flexibility and ease of use, delete_blog_option is a valuable asset for WordPress developers.