Miscellaneous Persistent Warning

Official Deprecated
Change of content encoding, media type or similar, indicating persistent warning.

Specification of the HTTP status code 299

The warning text can include arbitrary information to be presented to a human user or logged. A system receiving this warning MUST NOT take any automated action.

Source / Quote by: The 299 Miscellaneous Persistent Warning HTTP Status Code is specified by section 5.5.7 of RFC7234.


work in progress

How to throw a 299 statuscode with PHP?

To throw the HTTP status code 299 on a web page, the PHP function http_response_code can be used. The syntax is as follows: http_response_code(299) (PHP 5 >= 5.4.0, PHP 7, PHP 8)

Test the 299 HTTP status code

In order to be able to display the HTTP status code (in this case 299 Miscellaneous Persistent Warning) and other information on the client side, the development console must be opened with F12. Afterwards you have to navigate to the tab "Network". Now you can open the page, in the network tab you should see the web page (example index.php). This must be selected and then the Herder section must be selected. Here the user will see the following result:

Status code 299 Miscellaneous Persistent Warning
URL: https://http-statuscode.com/errorCodeExample.php?code=299
Status: 299 Miscellaneous Persistent Warning
Those: Network
IP address: XX.XX.XX.XX
Status code 299 Miscellaneous Persistent Warning

Browser compatibility of the 299 status code

Chrome no data
Edge no data
Firefox no data
Opera no data
Safari no data
Chrome Android no data
Firefox for Android no data
Opera Android no data
Safari on iOS no data
Internet no data
WebView Android no data
Author: Tony Brüser
Author: Tony Brüser

Tony Brüser is an enthusiastic web developer with a penchant for HTTP status codes.