wp_opcache_invalidate_file

What is WordPress Hook: wp_opcache_invalidate_file

The wp_opcache_invalidate_file hook is a specific WordPress hook that is used to invalidate a file in the opcode cache. This hook is essential for developers who want to ensure that their changes to a file are reflected in the opcode cache, which can improve the performance of their website.

Understanding the Hook: wp_opcache_invalidate_file

The wp_opcache_invalidate_file hook is located within the WordPress process that handles the opcode cache. When a file is modified, this hook can be used to trigger the invalidation of that file in the opcode cache, ensuring that the updated version of the file is used for subsequent requests.

Hook Parameters (if applicable): wp_opcache_invalidate_file

The wp_opcache_invalidate_file hook does not accept any arguments or parameters. It is a simple hook that can be called to invalidate a specific file in the opcode cache.

Hook Doesn’t Work: wp_opcache_invalidate_file

If the wp_opcache_invalidate_file hook doesn’t work as expected, it could be due to a misconfiguration of the opcode cache or a conflict with other caching mechanisms. It is important to ensure that the opcode cache is properly configured and that there are no conflicting settings that could prevent the hook from functioning correctly.

Best Practices & Usage Notes (if applicable): wp_opcache_invalidate_file

When using the wp_opcache_invalidate_file hook, it is important to note that it only applies to opcode caches that support file invalidation. Additionally, it is recommended to use this hook sparingly, as invalidating files in the opcode cache can have performance implications.

Usage Example: wp_opcache_invalidate_file

“`php
$file_path = ‘/path/to/modified/file.php’;
wp_opcache_invalidate_file( $file_path );
“`
In this example, the wp_opcache_invalidate_file hook is used to invalidate a specific file in the opcode cache. The $file_path variable should be replaced with the actual path to the modified file that needs to be invalidated.

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