Herman Venter
58760b99ae
When hphpd does a print instruction for a value that is an object, the object is serialized in the proxy (server) and then deserialized in the client. If the client VM does not have the class loaded, then the deserializer creates an instance of __PHP_Incomplete_Class and adds the class name to it as the value of a property called __PHP_Incomplete_Class_Name. This then shows up in the textual output of the print command, which is a bit confusing to say the least. Ironically the printed output is obtained by serializing the object instance. The basic design seems OK to me: The proxy should send the client the raw data and then leave it up to the client to figure out how to format it and what elide. And in this case, if the client is accessed via the API, the caller gets the raw data. So, it does not seem like a great idea to get the proxy to format objects so that the client just has to print the string as received from the client. Instead, this diff changes the object serializer so that when the PrintR option (debug output format) is specified, incomplete class instances are serialized with the class name obtained from the value of the __PHP_Incomplete_Class_Name (if present) and the property itself is elided from the output.
HipHop VM for PHP 
HipHop VM (HHVM) is a new open-source virtual machine designed for executing programs written in PHP. HHVM uses a just-in-time compilation approach to achieve superior performance while maintaining the flexibility that PHP developers are accustomed to. HipHop VM (and before it HPHPc) has realized > 5x increase in throughput for Facebook compared with Zend PHP 5.2.
HipHop is most commonly run as a standalone server, replacing both Apache and modphp.
Installing
You can install a prebuilt package or compile from source.
Running
You can run standalone programs just by passing them to hhvm: hhvm my_script.php.
HipHop bundles in a webserver. So if you want to run on port 80 with document root /var/www:
sudo hhvm -m server /var/www
For anything more complicated, you'll want to make a config.hdf and run sudo hhvm -m server -c config.hdf.
Contributing
We'd love to have your help in making HipHop better. If you run into problems, please open an issue, or better yet, fork us and send a pull request.
If you want to help but don't know where to start, try fixing some of the Zend tests that don't pass. You can run them with hphp/test/run. When they work, move them to zend/good and send a pull request.
Before changes can be accepted a Contributors Licensing Agreement must be signed.
Licence
HipHop VM is licensed under the PHP and Zend licenses except as otherwise noted.