Threads PHP: php_fork

This package can split tasks into multiple forked processes.

The main class takes an array of data to be processed as the whole task and creates child processes giving one element of the tasks array to be processed by each child process by calling given a given function that will process the respective task data.

It uses a separate storage object to store and retrieve task data to be shared between processes.

Currently it provides different storage classes that can store task data in memory as arrays, in files, or in a MemCached server.

Wrapper around the pcntl_fork() stuff, with a API set like Java language.
Practical usage is done by extending this class, and re-defining the run() method.
This way PHP developers can enclose logic into a class that extends PHP_Fork, then execute the start() method that forks a child process.
Communications with the forked process is ensured by using a Shared Memory Segment; by using a user-defined signal and this shared memory developers can access to child process methods that returns a serializable variable.

The shared variable space can be accessed with the tho methods:
o void setVariable($name, $value)
o mixed getVariable($name)

$name must be a valid PHP variable name;
$value must be a variable or a serializable object.
Resources (db connections, streams, etc.) cannot be serialized and so they're not correctly handled.

Only runs on *NIX systems, because Windows lacks of the needed pcntl ext.