Title: wp_fatal_error_handler_enabled
Published: May 7, 2019
Last modified: February 24, 2026

---

# apply_filters( ‘wp_fatal_error_handler_enabled’, bool $enabled )

## In this article

 * [Description](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#description)
 * [Parameters](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#wp--skip-link--target)

Filters whether the fatal error handler is enabled.

## 󠀁[Description](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#description)󠁿

**Important:** This filter runs before it can be used by plugins. It cannot be used
by plugins, mu-plugins, or themes. To use this filter you must define a `$wp_filter`
global before WordPress loads, usually in `wp-config.php`.

Example:

    ```php
    $GLOBALS['wp_filter'] = array(
        'wp_fatal_error_handler_enabled' => array(
            10 => array(
                array(
                    'accepted_args' => 0,
                    'function'      => function() {
                        return false;
                    },
                ),
            ),
        ),
    );
    ```

Alternatively you can use the `WP_DISABLE_FATAL_ERROR_HANDLER` constant.

## 󠀁[Parameters](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#parameters)󠁿

 `$enabled`bool

True if the fatal error handler is enabled, false otherwise.

## 󠀁[Source](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#source)󠁿

    ```php
    return apply_filters( 'wp_fatal_error_handler_enabled', $enabled );
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/error-protection.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/error-protection.php#L139)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/error-protection.php#L139-L139)

## 󠀁[Related](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#related)󠁿

| Used by | Description | 
| [wp_is_fatal_error_handler_enabled()](https://developer.wordpress.org/reference/functions/wp_is_fatal_error_handler_enabled/)`wp-includes/error-protection.php` |

Checks whether the fatal error handler is enabled.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/hooks/wp_fatal_error_handler_enabled/?output_format=md#changelog)󠁿

| Version | Description | 
| [5.2.0](https://developer.wordpress.org/reference/since/5.2.0/) | Introduced. |

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