Arbow

<?php
//Found on http://www.alternateinterior.com/2007/05/multi-threading-strategies-in-php.html
//Modified by http://www.php-code.net
//Modified: add executor
class Thread {
	var $pref ; // process reference
	var $pipes; // stdio
	var $buffer; // output buffer
	var $output;
	var $error;