WP_Ajax_Response::__isset( string $name )
Make private properties checkable for backwards compatibility.
Parameters
- $name
 -  
(string) (Required) Property to check if set.
 
Return
(bool) Whether the property is set.
Source
File: wp-includes/class-wp-ajax-response.php
'what' => 'object', 'action' => false, 'id' => '0',
Changelog
| Version | Description | 
|---|---|
| 4.0.0 | Introduced. | 
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Licensed under the GNU GPLv2+ License.
    https://developer.wordpress.org/reference/classes/wp_ajax_response/__isset