is_wp_error

Function Name: is_wp_error

WordPress is a powerful content management system that comes with a plethora of functions and features to help web developers create beautiful and functional websites. One such function that developers often use is the ‘is_wp_error’ function.

This function is used to determine whether a variable is a WordPress error object. In other words, it checks whether a given variable is an instance of the WP_Error class. The WP_Error class is used to handle errors and messages in WordPress, such as when a user fails to log in or when an HTTP request fails.

The ‘is_wp_error’ function takes a variable as its parameter and returns a boolean value (true or false) depending on whether the variable is an instance of the WP_Error class or not. If the variable is an instance of the WP_Error class, the function returns true. Otherwise, it returns false.

Here’s an example usage code:

$error = new WP_Error( ‘not_found’, ‘The requested post could not be found.’ ); if ( is_wp_error( $error ) ) { echo $error->get_error_message(); }

In the above code, we create a new instance of the WP_Error class and pass in an error code and message. We then use the ‘is_wp_error’ function to check whether the $error variable is an instance of the WP_Error class. Since it is, the function returns true and we can proceed to display the error message using the ‘get_error_message’ method.

In summary, the ‘is_wp_error’ function is a useful tool for developers who need to handle errors and messages in WordPress. It makes it easy to check whether a variable is an instance of the WP_Error class and take appropriate actions based on the result.

Learn More on WordPress.org