Title: WP_Object_Cache::__isset
Published: September 4, 2014
Last modified: April 28, 2025

---

# WP_Object_Cache::__isset( string $name ): bool

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/wp_object_cache/__isset/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/classes/wp_object_cache/__isset/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/wp_object_cache/__isset/?output_format=md#source)
 * [Changelog](https://developer.wordpress.org/reference/classes/wp_object_cache/__isset/?output_format=md#changelog)

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

Makes private properties checkable for backward compatibility.

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

 `$name`stringrequired

Property to check if set.

## 󠀁[Return](https://developer.wordpress.org/reference/classes/wp_object_cache/__isset/?output_format=md#return)󠁿

 bool Whether the property is set.

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

    ```php
    public function __isset( $name ) {
    	return isset( $this->$name );
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/class-wp-object-cache.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/class-wp-object-cache.php#L117)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-object-cache.php#L117-L119)

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

| Version | Description | 
| [4.0.0](https://developer.wordpress.org/reference/since/4.0.0/) | Introduced. |

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