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# Request headers

Request headers -- Adding additional headers to the HTTP request.

## How to add request headeres

Example 42-1. Adding a custom request header In this example a HTTP header `X-PHP-Version` is added to the HTTP request. The value of this header is the version string of the PHP interpreter that is running the instance of HTTP_Request.
    require_once "HTTP/Request.php";

    $req =& new HTTP_Request("http://example.com/");
    $req->addHeader("X-PHP-Version", phpversion());

    $response = $req->sendRequest();

    if (PEAR::isError($response)) {
        echo $response->getMessage();
    } else {
        echo $req->getResponseBody();
    }

Headers that have been added to the HTTP_Request object can be removed with the method removeHeader(), before sendRequest() has been called.

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