public static function getHeaders(): array
    {
        $headers = [];

        $contentHeaders = ['CONTENT_LENGTH' => true, 'CONTENT_MD5' => true, 'CONTENT_TYPE' => true];

        foreach ($_SERVER as $key => $value) {
            if (0 === strpos($key, 'HTTP_')) {
                $headers[substr($key, 5)] = $value;
            } elseif (isset($contentHeaders[$key])) { // CONTENT_* are not prefixed with HTTP_
                $headers[$key] = $value;
            }
        }

        if (isset($_SERVER['PHP_AUTH_USER'])) {
            $headers['PHP_AUTH_USER'] = $_SERVER['PHP_AUTH_USER'];
            $headers['PHP_AUTH_PW'] = $_SERVER['PHP_AUTH_PW'] ?? '';
        } else {
            /*
             * php-cgi under Apache does not pass HTTP Basic user/pass to PHP by default
             * For this workaround to work, add these lines to your .htaccess file:
             * RewriteCond %{HTTP:Authorization} ^(.+)$
             * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
             *
             * A sample .htaccess file:
             * RewriteEngine On
             * RewriteCond %{HTTP:Authorization} ^(.+)$
             * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
             * RewriteCond %{REQUEST_FILENAME} !-f
             * RewriteRule ^(.*)$ app.php [QSA,L]
             */
            $authorizationHeader = null;
            if (isset($_SERVER['HTTP_AUTHORIZATION'])) {
                $authorizationHeader = $_SERVER['HTTP_AUTHORIZATION'];
            } elseif (isset($_SERVER['REDIRECT_HTTP_AUTHORIZATION'])) {
                $authorizationHeader = $_SERVER['REDIRECT_HTTP_AUTHORIZATION'];
            }

            if (null !== $authorizationHeader) {
                if (0 === stripos($authorizationHeader, 'basic ')) {
                    // Decode AUTHORIZATION header into PHP_AUTH_USER and PHP_AUTH_PW when authorization header is basic
                    $exploded = explode(':', base64_decode(substr($authorizationHeader, 6)), 2);
                    if (count($exploded) === 2) {
                        list($headers['PHP_AUTH_USER'], $headers['PHP_AUTH_PW']) = $exploded;
                    }
                } elseif (empty($_SERVER['PHP_AUTH_DIGEST']) && (0 === stripos($authorizationHeader, 'digest '))) {
                    // In some circumstances PHP_AUTH_DIGEST needs to be set
                    $headers['PHP_AUTH_DIGEST'] = $authorizationHeader;
                    $_SERVER['PHP_AUTH_DIGEST'] = $authorizationHeader;
                } elseif (0 === stripos($authorizationHeader, 'bearer ')) {
                    /*
                     * XXX: Since there is no PHP_AUTH_BEARER in PHP predefined variables,
                     *      I'll just set $headers['AUTHORIZATION'] here.
                     *      http://php.net/manual/en/reserved.variables.server.php
                     */
                    $headers['AUTHORIZATION'] = $authorizationHeader;
                }
            }
        }

        if (isset($headers['AUTHORIZATION'])) {
            return $headers;
        }

        // PHP_AUTH_USER/PHP_AUTH_PW
        if (isset($headers['PHP_AUTH_USER'])) {
            $authorization = 'Basic ' . base64_encode($headers['PHP_AUTH_USER'] . ':' . $headers['PHP_AUTH_PW']);
            $headers['AUTHORIZATION'] = $authorization;
        } elseif (isset($headers['PHP_AUTH_DIGEST'])) {
            $headers['AUTHORIZATION'] = $headers['PHP_AUTH_DIGEST'];
        }

        return $headers;
    }
public static function getHeaders(): array
    {
        $headers = [];

        $contentHeaders = ['CONTENT_LENGTH' => true, 'CONTENT_MD5' => true, 'CONTENT_TYPE' => true];

        foreach ($_SERVER as $key => $value) {
            if (0 === strpos($key, 'HTTP_')) {
                $headers[substr($key, 5)] = $value;
            } elseif (isset($contentHeaders[$key])) { // CONTENT_* are not prefixed with HTTP_
                $headers[$key] = $value;
            }
        }

        if (isset($_SERVER['PHP_AUTH_USER'])) {
            $headers['PHP_AUTH_USER'] = $_SERVER['PHP_AUTH_USER'];
            $headers['PHP_AUTH_PW'] = $_SERVER['PHP_AUTH_PW'] ?? '';
        } else {
            /*
             * php-cgi under Apache does not pass HTTP Basic user/pass to PHP by default
             * For this workaround to work, add these lines to your .htaccess file:
             * RewriteCond %{HTTP:Authorization} ^(.+)$
             * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
             *
             * A sample .htaccess file:
             * RewriteEngine On
             * RewriteCond %{HTTP:Authorization} ^(.+)$
             * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
             * RewriteCond %{REQUEST_FILENAME} !-f
             * RewriteRule ^(.*)$ app.php [QSA,L]
             */
            $authorizationHeader = null;
            if (isset($_SERVER['HTTP_AUTHORIZATION'])) {
                $authorizationHeader = $_SERVER['HTTP_AUTHORIZATION'];
            } elseif (isset($_SERVER['REDIRECT_HTTP_AUTHORIZATION'])) {
                $authorizationHeader = $_SERVER['REDIRECT_HTTP_AUTHORIZATION'];
            }

            if (null !== $authorizationHeader) {
                if (0 === stripos($authorizationHeader, 'basic ')) {
                    // Decode AUTHORIZATION header into PHP_AUTH_USER and PHP_AUTH_PW when authorization header is basic
                    $exploded = explode(':', base64_decode(substr($authorizationHeader, 6)), 2);
                    if (count($exploded) === 2) {
                        list($headers['PHP_AUTH_USER'], $headers['PHP_AUTH_PW']) = $exploded;
                    }
                } elseif (empty($_SERVER['PHP_AUTH_DIGEST']) && (0 === stripos($authorizationHeader, 'digest '))) {
                    // In some circumstances PHP_AUTH_DIGEST needs to be set
                    $headers['PHP_AUTH_DIGEST'] = $authorizationHeader;
                    $_SERVER['PHP_AUTH_DIGEST'] = $authorizationHeader;
                } elseif (0 === stripos($authorizationHeader, 'bearer ')) {
                    /*
                     * XXX: Since there is no PHP_AUTH_BEARER in PHP predefined variables,
                     *      I'll just set $headers['AUTHORIZATION'] here.
                     *      http://php.net/manual/en/reserved.variables.server.php
                     */
                    $headers['AUTHORIZATION'] = $authorizationHeader;
                }
            }
        }

        if (isset($headers['AUTHORIZATION'])) {
            return $headers;
        }

        // PHP_AUTH_USER/PHP_AUTH_PW
        if (isset($headers['PHP_AUTH_USER'])) {
            $authorization = 'Basic ' . base64_encode($headers['PHP_AUTH_USER'] . ':' . $headers['PHP_AUTH_PW']);
            $headers['AUTHORIZATION'] = $authorization;
        } elseif (isset($headers['PHP_AUTH_DIGEST'])) {
            $headers['AUTHORIZATION'] = $headers['PHP_AUTH_DIGEST'];
        }

        return $headers;
    }
public static function getHeaders ( ) : array { $ headers = [ ] ; $ contentHeaders = [ 'CONTENT_LENGTH' => true , 'CONTENT_MD5' => true , 'CONTENT_TYPE' => true ] ; foreach ( $ _SERVER as $ key => $ value ) { if ( 0 === strpos ( $ key , 'HTTP_' ) ) { $ headers [ substr ( $ key , 5 ) ] = $ value ; } elseif ( isset ( $ contentHeaders [ $ key ] ) ) { // CONTENT_* are not prefixed with HTTP_ $ headers [ $ key ] = $ value ; } } if ( isset ( $ _SERVER [ 'PHP_AUTH_USER' ] ) ) { $ headers [ 'PHP_AUTH_USER' ] = $ _SERVER [ 'PHP_AUTH_USER' ] ; $ headers [ 'PHP_AUTH_PW' ] = $ _SERVER [ 'PHP_AUTH_PW' ] ?? '' ; } else { /*
             * php-cgi under Apache does not pass HTTP Basic user/pass to PHP by default
             * For this workaround to work, add these lines to your .htaccess file:
             * RewriteCond %{HTTP:Authorization} ^(.+)$
             * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
             *
             * A sample .htaccess file:
             * RewriteEngine On
             * RewriteCond %{HTTP:Authorization} ^(.+)$
             * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
             * RewriteCond %{REQUEST_FILENAME} !-f
             * RewriteRule ^(.*)$ app.php [QSA,L]
             */ $ authorizationHeader = null ; if ( isset ( $ _SERVER [ 'HTTP_AUTHORIZATION' ] ) ) { $ authorizationHeader = $ _SERVER [ 'HTTP_AUTHORIZATION' ] ; } elseif ( isset ( $ _SERVER [ 'REDIRECT_HTTP_AUTHORIZATION' ] ) ) { $ authorizationHeader = $ _SERVER [ 'REDIRECT_HTTP_AUTHORIZATION' ] ; } if ( null !== $ authorizationHeader ) { if ( 0 === stripos ( $ authorizationHeader , 'basic ' ) ) { // Decode AUTHORIZATION header into PHP_AUTH_USER and PHP_AUTH_PW when authorization header is basic $ exploded = explode ( ':' , base64_decode ( substr ( $ authorizationHeader , 6 ) ) , 2 ) ; if ( count ( $ exploded ) === 2 ) { list ( $ headers [ 'PHP_AUTH_USER' ] , $ headers [ 'PHP_AUTH_PW' ] ) = $ exploded ; } } elseif ( empty ( $ _SERVER [ 'PHP_AUTH_DIGEST' ] ) && ( 0 === stripos ( $ authorizationHeader , 'digest ' ) ) ) { // In some circumstances PHP_AUTH_DIGEST needs to be set $ headers [ 'PHP_AUTH_DIGEST' ] = $ authorizationHeader ; $ _SERVER [ 'PHP_AUTH_DIGEST' ] = $ authorizationHeader ; } elseif ( 0 === stripos ( $ authorizationHeader , 'bearer ' ) ) { /*
                     * XXX: Since there is no PHP_AUTH_BEARER in PHP predefined variables,
                     *      I'll just set $headers['AUTHORIZATION'] here.
                     *      http://php.net/manual/en/reserved.variables.server.php
                     */ $ headers [ 'AUTHORIZATION' ] = $ authorizationHeader ; } } } if ( isset ( $ headers [ 'AUTHORIZATION' ] ) ) { return $ headers ; } // PHP_AUTH_USER/PHP_AUTH_PW if ( isset ( $ headers [ 'PHP_AUTH_USER' ] ) ) { $ authorization = 'Basic ' . base64_encode ( $ headers [ 'PHP_AUTH_USER' ] . ':' . $ headers [ 'PHP_AUTH_PW' ] ) ; $ headers [ 'AUTHORIZATION' ] = $ authorization ; } elseif ( isset ( $ headers [ 'PHP_AUTH_DIGEST' ] ) ) { $ headers [ 'AUTHORIZATION' ] = $ headers [ 'PHP_AUTH_DIGEST' ] ; } return $ headers ; }
Get all HTTP headers

@see https://github.com/symfony/http-foundation/blob/master/ServerBag.php

@return array

@SuppressWarnings(PHPMD.Superglobals)
@SuppressWarnings(PHPMD.NPathComplexity)
Get all HTTP headers