PreconditionRequired

HTTP 428 Precondition Required response class.

class PreconditionRequired extends \Hazaar\Controller\Response\HTTP\Response

This response indicates that the origin server requires the request to be conditional. This is typically used to prevent the 'lost update' problem, where a client GETs a resource's state, modifies it, and PUTs it back to the server, while a third party has modified the state on the server, leading to a conflict.

Methods

__construct

Constructs the HTTP 428 Precondition Required response.

public __construct(string $contentType = 'text/html'): void

This constructor initializes the response with a status code of 428 and sets the content type.

Parameters

Parameter	Type	Description
$contentType	string	The content type of the response. Defaults to text/html.

---

Generated by Hazaar API Doc Generator on Tue, 21 Apr 2026 04:00:24 +0000