protected static function getSuppliedCSRF()
    {
        $headers = function_exists('getallheaders') === true ? getallheaders() : [];

        $requestArguments = [];
        parse_str(file_get_contents('php://input'), $requestArguments);
        $requestArguments = array_merge($_POST, $requestArguments);

        if (array_key_exists(static::CSRF_TOKEN_HEADER, $headers) === true) {
            return $headers[static::CSRF_TOKEN_HEADER];
        } elseif (array_key_exists("csrf_token", $requestArguments) === true) {
            return $requestArguments['csrf_token'];
        } else {
            return null;
        }
    }
protected static function getSuppliedCSRF()
    {
        $headers = function_exists('getallheaders') === true ? getallheaders() : [];

        $requestArguments = [];
        parse_str(file_get_contents('php://input'), $requestArguments);
        $requestArguments = array_merge($_POST, $requestArguments);

        if (array_key_exists(static::CSRF_TOKEN_HEADER, $headers) === true) {
            return $headers[static::CSRF_TOKEN_HEADER];
        } elseif (array_key_exists("csrf_token", $requestArguments) === true) {
            return $requestArguments['csrf_token'];
        } else {
            return null;
        }
    }
protected static function getSuppliedCSRF ( ) { $ headers = function_exists ( 'getallheaders' ) === true ? getallheaders ( ) : [ ] ; $ requestArguments = [ ] ; parse_str ( file_get_contents ( 'php://input' ) , $ requestArguments ) ; $ requestArguments = array_merge ( $ _POST , $ requestArguments ) ; if ( array_key_exists ( static :: CSRF_TOKEN_HEADER , $ headers ) === true ) { return $ headers [ static :: CSRF_TOKEN_HEADER ] ; } elseif ( array_key_exists ( "csrf_token" , $ requestArguments ) === true ) { return $ requestArguments [ 'csrf_token' ] ; } else { return null ; } }
Get the CSRF token, presented as a header, a PUT parameter, or a POST parameter.

@return string|null
Get the CSRF token presented as a header a PUT parameter or a POST parameter .