What is WordPress Hook: wp_blacklist_check
The wp_blacklist_check hook is a specific hook in WordPress that allows developers to filter and modify the content of a comment before it is saved to the database. This hook is commonly used to check the content of a comment against a predefined blacklist of words or phrases.
Understanding the Hook: wp_blacklist_check
The wp_blacklist_check hook is located within the comment moderation process in WordPress. When a user submits a comment, the content is passed through this hook before it is saved to the database. Developers can use this hook to perform custom checks on the comment content and take appropriate actions based on the results.
Hook Parameters (if applicable): wp_blacklist_check
The wp_blacklist_check hook accepts a single parameter, which is the content of the comment being checked. Developers can access and modify this parameter within their custom function to perform their desired checks and modifications.
Hook Doesn’t Work: wp_blacklist_check
If the wp_blacklist_check hook doesn’t seem to be working as expected, there are a few potential causes to consider. First, ensure that the hook is being properly added to the WordPress theme or plugin. Additionally, check for any conflicts with other hooks or functions that may be affecting the behavior of the wp_blacklist_check hook. It’s also important to verify that the blacklist of words or phrases is correctly configured for the desired filtering.
Best Practices & Usage Notes (if applicable): wp_blacklist_check
When using the wp_blacklist_check hook, it’s important to consider the performance implications of any custom checks or modifications. Excessive processing within this hook can impact the overall performance of the comment submission process. Additionally, developers should be mindful of the potential impact on user experience and ensure that any filtering or modifications are necessary and appropriate.
Usage Example: wp_blacklist_check
“`php
function custom_blacklist_check( $comment_content ) {
// Perform custom blacklist checks and modifications
// Example: Replace banned words with asterisks
$banned_words = array( ‘word1’, ‘word2’, ‘word3’ );
$comment_content = str_ireplace( $banned_words, ‘***’, $comment_content );
return $comment_content;
}
add_filter( ‘wp_blacklist_check’, ‘custom_blacklist_check’ );
“`
