lexpress / sf-web-browser-plugin
HTTP client capable of making web requests now available as service.
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Type:symfony1-plugin
Requires
- composer/installers: ~1.0
This package is not auto-updated.
Last update: 2020-01-20 06:55:28 UTC
README
The sfWebBrowserPlugin
proposes an HTTP client capable of making web requests. The interface is similar to that of sfTestBrowser
.
Possible uses
- Querying a Web service
- Monitoring a Website
- Mashup of content from several websites
- Aggregation of RSS feeds
- Proxy to another server
- Cross-domain AJAX interactions
- API to foreign websites
- Fetch images and other types of content
- ...
Contents
This plugin contains four classes: sfWebBrowser
, sfCurlAdapter
, sfFopenAdapter
, and sfSocketsAdapter
. Unit tests are available in the SVN repository, to be placed in a symfony application's test/
directory.
Features
The sfWebBrowser
class makes web requests based on a URI:
<?php $b = new sfWebBrowser(); $b->get('http://www.example.com/'); $res = $b->getResponseText();
The usual methods of the sfTestBrowser
also work there, with the fluid interface.
<?php // Inline $b->get('http://www.example.com/')->get('http://www.google.com/')->back()->reload(); // More readable $b->get('http://www.example.com/') ->get('http://www.google.com/') ->back() ->reload();
The browser accepts absolute and relative URIs
<?php $b->get('http://www.example.com/test.html'); $b->get('test.html');
The get()
method accepts parameters either as a query string, or as an associative array.
<?php $b->get('http://www.example.com/test.php?foo=bar'); $b->get('http://www.example.com/test.php', array('foo' => 'bar'));
POST, PUT and DELETE requests are also supported.
<?php $b->post('http://www.example.com/test.php', array('foo' => 'bar')); $b->put('http://www.example.com/test.php', array('foo' => 'bar')); $b->delete('http://www.example.com/test.php', array('foo' => 'bar'));
You can access the response in various formats, at your convenience:
<?php $myString = $b->getResponseText(); $myString = $b->getResponseBody(); // drop the <head> part $myDomDocument = $b->getResponseDom(); $myDomCssSelector = $b->getResponseDomCssSelector(); $mySimpleXml = $b->getResponseXml();
The browser supports HTTP and HTTPS requests, proxies, redirects, and timeouts.
Gzip and deflate content-encoded response bodies are also supported, provided that you have the [http://php.net/zlib zlib extention] enabled.
Adapters
The browser can use various adapters to perform the requests, and uses the following selection order by default:
sfCurlAdapter
: Uses Curl to fetch pages. This adapter is a lot faster thansfFopenAdapter
, however PHP must be compiled with thewith-curl
option, and thecurl
extension must be enabled inphp.ini
(which is rarely the case by default) for it to work.sfFopenAdapter
: Usesfopen()
to fetch pages.fopen()
can take an URL as a parameter provided that PHP is compiled with sockets support, andallow_url_fopen
is defined totrue
inphp.ini
. This is the case in most PHP distributions, so the default adapter should work in almost every platform. On the other hand, the compatibility has a cost: this adapter is slow.sfSocketsAdapter
: Usesfsockopen()
to fetch pages.
Alternatively, you can specify an adapter explicitly when you create a new browser object, as follows:
<?php // use default adapter, i.e. sfCurlAdapter $b = new sfWebBrowser(array()); // use sfFopenAdapter $b = new sfWebBrowser(array(), 'sfFopenAdapter');
Currenly, sfCurlAdapter
offers slightly more functionality than the other adapters. Namely, it supports multipart file uploads and cookies, which means you can login to a site as well as upload files via forms.
<?php // upload files via a form $b = new sfWebBrowser(); $b->post($url_of_form, array( 'file_field' => '/path/to/my/local/file.jpg' )); // login to a website $b = new sfWebBrowser(array(), 'sfCurlAdapter', array('cookies' => true)); $b->post($url_of_login_form, array( 'user_field' => $username, 'pass_field' => $password ));
Full examples are available in the unit tests.
Error Handling
sfWebBrowser
distinguishes to types of error: adapter errors and response errors. Thus, sfWebBrowser
calls should be run this way :
<?php $b = new sfWebBrowser(); try { if (!$b->get($url)->responseIsError()) { // Successful response (eg. 200, 201, etc) } else { // Error response (eg. 404, 500, etc) } } catch (Exception $e) { // Adapter error (eg. Host not found) }
Besides, you should always remember that the response contents may contain incorrect code. Consider it as 'tainted', and therefore always use the escaping when outputting it to a template.
<?php // In the action $this->title = (string) $b->getResponseXml()->body->h1 // In the template ?> <?php echo $title // dangerous ?> <?php echo $sf_data->get('title') // correct ?>
Installation
- Install the plugin
$ php symfony plugin:install sfWebBrowserPlugin # for symfony 1.1 and 1.2 $ php symfony plugin-install http://plugins.symfony-project.com/sfWebBrowserPlugin # for symfony 1.0
- Clear the cache to enable the autoloading to find the new class
$ symfony cc
Known limitations
Cookies, caching, and file uploads are not yet supported in any of the packages (some of this functionality is available with sfCurlAdapter
, see above).
Changelog
Trunk
2016-05-04 | 1.2.0 Stable
- jeromemacias: Do not save into stack by default (fixed memory leak)
- jeromemacias: Removed interaction with response (click and setField methods)
- COil: Added the CURL error number in the returned exception
- GromNaN: Inject sf_web_browser as a service (require symfony1 fork with service container)
- GromNaN: Composer compatible
- jeromemacias: Added followRedirect property (default: true), now possible to turn it off
- CaptainJojo: Update sfCurlAdapter for init postfields
- IllyaSvergun: PHP 5.5 compatibility
- siimsoni: sfCurlAdapter binary compatibility
2009-05-12 | 1.1.2 Stable
- francois: Fixed sfCurlAdapter destructor
- francois: Fixed sf1.2 compatibility issue for custom exception
- francois: Fixed a few limit case bugs and made the tests pass
2009-04-22 | 1.1.1 Stable
- francois: Fixed README syntax for parameters array
- bmeynell: Fixed custom options in
sfCurlAdapter
2008-09-23 | 1.1.0 Stable
- francois: Translated README to Markdown
- francois: Added support for custom options in
sfCurlAdapter
- francois: Added suppot for Timeout with
sfCurlAdapter
(based on a patch by adoanhuu) - blacksun: Allow for SSL certificate verification
- francois: Added a test to check exceptions thrown by
getResponseXML
- bmeynell: added multipart file upload support to
sfCurlAdapter
- bmeynell: fixed regex in getResponseBody() which was returning an empty body
- bmeynell:
sfCurlAdapter
: Added new options: 'cookies', 'cookies_dir', 'cookies_file', 'verbose', 'verbose_log' - bmeynell:
sfCurlAdapter
: Increased speed by Moving some initialization from call() to the constructer - tristan: Easier management of invalid XML responses
- francois: Fixed a bug in
sfFopenAdapter
error handler - bmeynell: Added chunked transfer encoding support to
sfSocketsAdapter
- bmeynell: Added support for 301 redirects in
sfSocketsAdapter
2007-03-27 | 1.0.1 stable
- bmeynell: Fixed a bug with
sfCurlAdapter
causing 'Bad Request' error responses - francois: Fixed a bug with
get()
whenarg_separator.output
is not set to '&' inphp.ini
(patch from river.bright) - francois: Fixed a bug with
get()
when query string is already present in the url (based on a patch from Jeff Merlet) - francois: Fixed auto-adapter decision in
sfWebBrowser::__construct()
2007-03-08 | 1.0.0 stable
- francois: Added auto-adapter decision in
sfWebBrowser::__construct()
- francois: Changed tested URLs a bit to avoid redirection issues with google
- bmeynell: Added
sfSocketsAdapter
- bmeynell:
sfCurlAdapter
: more detailed error messages & leaner request setup
2007-02-22 | 0.9.6 Beta
- bmeynell, tristan: Allowed for requests with any method in
sfCurlAdapter
- tristan: Added
sfWebBrowser::responseIsError()
- tristan: Added
sfWebBrowser::getResponseMessage()
- tristan: Refactored error management in
sfFopenAdapter
2007-02-21 | 0.9.5 Beta
- bmeynell: Fixed bug with relative uri's attempting to use a port other than 80 (sfWebBrowser, 132 - 146)
- bmeynell: Fixed small bug not printing hostname on exception (sfFopenAdapter, 61-62)
- bmeynell: Created sfCurlAdapter and passes all unit tests
- bmeynell: Removed '$changeStack = true' from call() prototype in sfCurlAdapter, sfFopenAdapter, and moved changestack check to sfWebBrowser
- bmeynell: Added $askeet_url to sfWebBrowserTest
- bmeynell: Added easy toggling between adapters in sfWebBrowserTest
- tristan: Added put() and delete() public methods
- tristan: Added unit tests to validate request HTTP method
2007-02-16 | 0.9.4 Beta
- francois: Refactored the browser to make it multi-adapter
- francois: '''BC break''' constructor signature changed :
new sfWebBrowser(array $headers, string $adapter_class, array $adapter_options)
- francois: Fixed notice when trying to retrieve inexistent header
- francois: Fixed header case normalization
- francois: Transformed setResponseXXX() methods to public
- francois: Fixed caps in
initializeRequestHeaders()
- francois: Fixed unit test #40
2007-02-16 | 0.9.3 Beta
- tristan: Added support for gzip and deflate.
- tristan: Possibility to pass default request headers to sfWebBrowser's constructor
- tristan: "Accept-Encoding" header is automatically set depending on PHP capabilities
- tristan: Fixed problems with request and response headers case
- tristan: Renamed "browser options" to "adapter options" (http://www.symfony-project.com/forum/index.php/m/21635/)
- tristan: '''BC break''' constructor signature changed :
new sfWebBrowser(array $headers, array $adapter_options)
- tristan: Unit tested POST requests
- tristan: Changed way httpd headers are stored internally
- tristan: Fixed small bug in
getResponseBody()
- francois: Fixed unit test for malformed headers
2007-02-09 | 0.9.2 Beta
- francois: Fixed notice with
getResponseXML()
2007-02-08 | 0.9.1 Beta
- francois: Fixed notice with some headers
- francois: Added license and copyright
2007-02-08 | 0.9.0 Beta
- francois: Initial release