Parse error: syntax error, unexpected 'public' (T_PUBLIC)

Parse error: syntax error, unexpected 'public' (T_PUBLIC)

public 函数在名为 Client 的 class 中使用,但它仍然会为 class 中的每个函数抛出这样的错误。对此有什么解决办法吗?我正在尝试测试 php 的 getstream。我在 client.php 中收到此错误 我知道在使用 public 函数时未声明 [​​=15=] 时会发生此错误,但在这种情况下,已声明 class 并且根据文档,这应该没有错误地工作。

    <?php
    namespace GuzzleHttp;

    use GuzzleHttp\Cookie\CookieJar;
    use GuzzleHttp\Promise;
    use GuzzleHttp\Psr7;
    use Psr\Http\Message\UriInterface;
    use Psr\Http\Message\RequestInterface;
    use Psr\Http\Message\ResponseInterface;

    /**
     * @method ResponseInterface get(string|UriInterface $uri, array $options = [])
     * @method ResponseInterface head(string|UriInterface $uri, array $options = [])
     * @method ResponseInterface put(string|UriInterface $uri, array $options = [])
     * @method ResponseInterface post(string|UriInterface $uri, array $options = [])
     * @method ResponseInterface patch(string|UriInterface $uri, array $options = [])
     * @method ResponseInterface delete(string|UriInterface $uri, array $options = [])
     * @method Promise\PromiseInterface getAsync(string|UriInterface $uri, array $options = [])
     * @method Promise\PromiseInterface headAsync(string|UriInterface $uri, array $options = [])
     * @method Promise\PromiseInterface putAsync(string|UriInterface $uri, array $options = [])
     * @method Promise\PromiseInterface postAsync(string|UriInterface $uri, array $options = [])
     * @method Promise\PromiseInterface patchAsync(string|UriInterface $uri, array $options = [])
     * @method Promise\PromiseInterface deleteAsync(string|UriInterface $uri, array $options = [])
     */
    class Client implements ClientInterface
    {
        /** @var array Default request options */
        private $config;

        /**
         * Clients accept an array of constructor parameters.
         *
         * Here's an example of creating a client using a base_uri and an array of
         * default request options to apply to each request:
         *
         *     $client = new Client([
         *         'base_uri'        => 'http://www.foo.com/1.0/',
         *         'timeout'         => 0,
         *         'allow_redirects' => false,
         *         'proxy'           => '192.168.16.1:10'
         *     ]);
         *
         * Client configuration settings include the following options:
         *
         * - handler: (callable) Function that transfers HTTP requests over the
         *   wire. The function is called with a Psr7\Http\Message\RequestInterface
         *   and array of transfer options, and must return a
         *   GuzzleHttp\Promise\PromiseInterface that is fulfilled with a
         *   Psr7\Http\Message\ResponseInterface on success. "handler" is a
         *   constructor only option that cannot be overridden in per/request
         *   options. If no handler is provided, a default handler will be created
         *   that enables all of the request options below by attaching all of the
         *   default middleware to the handler.
         * - base_uri: (string|UriInterface) Base URI of the client that is merged
         *   into relative URIs. Can be a string or instance of UriInterface.
         * - **: any request option
         *
         * @param array $config Client configuration settings.
         *
         * @see \GuzzleHttp\RequestOptions for a list of available request options.
         */
        //public function __construct(array $config = [])
          public function __construct(array $config = ['verify' => false]) {
        {
            if (!isset($config['handler'])) {
                $config['handler'] = HandlerStack::create();
            }

            // Convert the base_uri to a UriInterface
            if (isset($config['base_uri'])) {
                $config['base_uri'] = Psr7\uri_for($config['base_uri']);
            }

            $this->configureDefaults($config);
        }

        public function __call($method, $args)
        {
            if (count($args) < 1) {
                throw new \InvalidArgumentException('Magic request methods require a URI and optional options array');
            }

            $uri = $args[0];
            $opts = isset($args[1]) ? $args[1] : [];

            return substr($method, -5) === 'Async'
                ? $this->requestAsync(substr($method, 0, -5), $uri, $opts)
                : $this->request($method, $uri, $opts);
        }

        public function sendAsync(RequestInterface $request, array $options = [])
        {
            // Merge the base URI into the request URI if needed.
            $options = $this->prepareDefaults($options);

            return $this->transfer(
                $request->withUri($this->buildUri($request->getUri(), $options), $request->hasHeader('Host')),
                $options
            );
        }

        public function send(RequestInterface $request, array $options = [])
        {
            $options[RequestOptions::SYNCHRONOUS] = true;
            return $this->sendAsync($request, $options)->wait();
        }

        public function requestAsync($method, $uri = '', array $options = [])
        {
            $options = $this->prepareDefaults($options);
            // Remove request modifying parameter because it can be done up-front.
            $headers = isset($options['headers']) ? $options['headers'] : [];
            $body = isset($options['body']) ? $options['body'] : null;
            $version = isset($options['version']) ? $options['version'] : '1.1';
            // Merge the URI into the base URI.
            $uri = $this->buildUri($uri, $options);
            if (is_array($body)) {
                $this->invalidBody();
            }
            $request = new Psr7\Request($method, $uri, $headers, $body, $version);
            // Remove the option so that they are not doubly-applied.
            unset($options['headers'], $options['body'], $options['version']);

            return $this->transfer($request, $options);
        }

        public function request($method, $uri = '', array $options = [])
        {
            $options[RequestOptions::SYNCHRONOUS] = true;
            return $this->requestAsync($method, $uri, $options)->wait();
        }

        public function getConfig($option = null)
        {
            return $option === null
                ? $this->config
                : (isset($this->config[$option]) ? $this->config[$option] : null);
        }

        private function buildUri($uri, array $config)
        {
            // for BC we accept null which would otherwise fail in uri_for
            $uri = Psr7\uri_for($uri === null ? '' : $uri);

            if (isset($config['base_uri'])) {
                $uri = Psr7\UriResolver::resolve(Psr7\uri_for($config['base_uri']), $uri);
            }

            return $uri->getScheme() === '' && $uri->getHost() !== '' ? $uri->withScheme('http') : $uri;
        }

        /**
         * Configures the default options for a client.
         *
         * @param array $config
         */
        private function configureDefaults(array $config)
        {
            $defaults = [
                'allow_redirects' => RedirectMiddleware::$defaultSettings,
                'http_errors'     => true,
                'decode_content'  => true,
                'verify'          => true,
                'cookies'         => false
            ];

            // Use the standard Linux HTTP_PROXY and HTTPS_PROXY if set.

            // We can only trust the HTTP_PROXY environment variable in a CLI
            // process due to the fact that PHP has no reliable mechanism to
            // get environment variables that start with "HTTP_".
            if (php_sapi_name() == 'cli' && getenv('HTTP_PROXY')) {
                $defaults['proxy']['http'] = getenv('HTTP_PROXY');
            }

            if ($proxy = getenv('HTTPS_PROXY')) {
                $defaults['proxy']['https'] = $proxy;
            }

            if ($noProxy = getenv('NO_PROXY')) {
                $cleanedNoProxy = str_replace(' ', '', $noProxy);
                $defaults['proxy']['no'] = explode(',', $cleanedNoProxy);
            }

            $this->config = $config + $defaults;

            if (!empty($config['cookies']) && $config['cookies'] === true) {
                $this->config['cookies'] = new CookieJar();
            }

            // Add the default user-agent header.
            if (!isset($this->config['headers'])) {
                $this->config['headers'] = ['User-Agent' => default_user_agent()];
            } else {
                // Add the User-Agent header if one was not already set.
                foreach (array_keys($this->config['headers']) as $name) {
                    if (strtolower($name) === 'user-agent') {
                        return;
                    }
                }
                $this->config['headers']['User-Agent'] = default_user_agent();
            }
        }

        /**
         * Merges default options into the array.
         *
         * @param array $options Options to modify by reference
         *
         * @return array
         */
        private function prepareDefaults($options)
        {
            $defaults = $this->config;

            if (!empty($defaults['headers'])) {
                // Default headers are only added if they are not present.
                $defaults['_conditional'] = $defaults['headers'];
                unset($defaults['headers']);
            }

            // Special handling for headers is required as they are added as
            // conditional headers and as headers passed to a request ctor.
            if (array_key_exists('headers', $options)) {
                // Allows default headers to be unset.
                if ($options['headers'] === null) {
                    $defaults['_conditional'] = null;
                    unset($options['headers']);
                } elseif (!is_array($options['headers'])) {
                    throw new \InvalidArgumentException('headers must be an array');
                }
            }

            // Shallow merge defaults underneath options.
            $result = $options + $defaults;

            // Remove null values.
            foreach ($result as $k => $v) {
                if ($v === null) {
                    unset($result[$k]);
                }
            }

            return $result;
        }

        /**
         * Transfers the given request and applies request options.
         *
         * The URI of the request is not modified and the request options are used
         * as-is without merging in default options.
         *
         * @param RequestInterface $request
         * @param array            $options
         *
         * @return Promise\PromiseInterface
         */
        private function transfer(RequestInterface $request, array $options)
        {
            // save_to -> sink
            if (isset($options['save_to'])) {
                $options['sink'] = $options['save_to'];
                unset($options['save_to']);
            }

            // exceptions -> http_errors
            if (isset($options['exceptions'])) {
                $options['http_errors'] = $options['exceptions'];
                unset($options['exceptions']);
            }

            $request = $this->applyOptions($request, $options);
            $handler = $options['handler'];

            try {
                return Promise\promise_for($handler($request, $options));
            } catch (\Exception $e) {
                return Promise\rejection_for($e);
            }
        }

        /**
         * Applies the array of request options to a request.
         *
         * @param RequestInterface $request
         * @param array            $options
         *
         * @return RequestInterface
         */
        private function applyOptions(RequestInterface $request, array &$options)
        {
            $modify = [];

            if (isset($options['form_params'])) {
                if (isset($options['multipart'])) {
                    throw new \InvalidArgumentException('You cannot use '
                        . 'form_params and multipart at the same time. Use the '
                        . 'form_params option if you want to send application/'
                        . 'x-www-form-urlencoded requests, and the multipart '
                        . 'option to send multipart/form-data requests.');
                }
                $options['body'] = http_build_query($options['form_params'], '', '&');
                unset($options['form_params']);
                $options['_conditional']['Content-Type'] = 'application/x-www-form-urlencoded';
            }

            if (isset($options['multipart'])) {
                $options['body'] = new Psr7\MultipartStream($options['multipart']);
                unset($options['multipart']);
            }

            if (isset($options['json'])) {
                $options['body'] = \GuzzleHttp\json_encode($options['json']);
                unset($options['json']);
                $options['_conditional']['Content-Type'] = 'application/json';
            }

            if (!empty($options['decode_content'])
                && $options['decode_content'] !== true
            ) {
                $modify['set_headers']['Accept-Encoding'] = $options['decode_content'];
            }

            if (isset($options['headers'])) {
                if (isset($modify['set_headers'])) {
                    $modify['set_headers'] = $options['headers'] + $modify['set_headers'];
                } else {
                    $modify['set_headers'] = $options['headers'];
                }
                unset($options['headers']);
            }

            if (isset($options['body'])) {
                if (is_array($options['body'])) {
                    $this->invalidBody();
                }
                $modify['body'] = Psr7\stream_for($options['body']);
                unset($options['body']);
            }

            if (!empty($options['auth']) && is_array($options['auth'])) {
                $value = $options['auth'];
                $type = isset($value[2]) ? strtolower($value[2]) : 'basic';
                switch ($type) {
                    case 'basic':
                        $modify['set_headers']['Authorization'] = 'Basic '
                            . base64_encode("$value[0]:$value[1]");
                        break;
                    case 'digest':
                        // @todo: Do not rely on curl
                        $options['curl'][CURLOPT_HTTPAUTH] = CURLAUTH_DIGEST;
                        $options['curl'][CURLOPT_USERPWD] = "$value[0]:$value[1]";
                        break;
                }
            }

            if (isset($options['query'])) {
                $value = $options['query'];
                if (is_array($value)) {
                    $value = http_build_query($value, null, '&', PHP_QUERY_RFC3986);
                }
                if (!is_string($value)) {
                    throw new \InvalidArgumentException('query must be a string or array');
                }
                $modify['query'] = $value;
                unset($options['query']);
            }

            // Ensure that sink is not an invalid value.
            if (isset($options['sink'])) {
                // TODO: Add more sink validation?
                if (is_bool($options['sink'])) {
                    throw new \InvalidArgumentException('sink must not be a boolean');
                }
            }

            $request = Psr7\modify_request($request, $modify);
            if ($request->getBody() instanceof Psr7\MultipartStream) {
                // Use a multipart/form-data POST if a Content-Type is not set.
                $options['_conditional']['Content-Type'] = 'multipart/form-data; boundary='
                    . $request->getBody()->getBoundary();
            }

            // Merge in conditional headers if they are not present.
            if (isset($options['_conditional'])) {
                // Build up the changes so it's in a single clone of the message.
                $modify = [];
                foreach ($options['_conditional'] as $k => $v) {
                    if (!$request->hasHeader($k)) {
                        $modify['set_headers'][$k] = $v;
                    }
                }
                $request = Psr7\modify_request($request, $modify);
                // Don't pass this internal value along to middleware/handlers.
                unset($options['_conditional']);
            }

            return $request;
        }

        private function invalidBody()
        {
            throw new \InvalidArgumentException('Passing in the "body" request '
                . 'option as an array to send a POST request has been deprecated. '
                . 'Please use the "form_params" request option to send a '
                . 'application/x-www-form-urlencoded request, or a the "multipart" '
                . 'request option to send a multipart/form-data request.');
        }
    }

public 函数 __construct(数组 $config = ['verify' => false]) { { // <-- 此处有重复的大括号