How can leading whitespace in the Authorization header affect the success of the request in PHP?

Leading whitespace in the Authorization header can cause authentication failures in PHP because the server may not recognize the credentials correctly. To solve this issue, you can trim the Authorization header to remove any leading or trailing whitespace before processing the request. 

<?php
$headers = getallheaders();

if(isset($headers['Authorization'])) {
    $authorizationHeader = trim($headers['Authorization']);
    // Process the authorization header
} else {
    // Handle case where Authorization header is not set
}

Keywords

Authorization header leading whitespace request success PHP whitespace trimming.

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