PHP 决策表/判决表,使用场景:用多个单个状态判断对象的综合状态
<?php
// 定义一个用来决定下雨是否出门的决策表
class RainTable extends DecisionTableAbstract
{
protected function buildTable()
{
// 条件值并不局限于0和1,可以用“===”比较的都可以
$this->addRule(array('下雨' => 1, '有车' => 1, '有事' => 1), '出门');
$this->addRule(array('下雨' => 0, '有车' => 0, '有事' => 0), '呆家');
$this->addRule(array('下雨' => 1, '有车' => 1, '有事' => 0), '呆家');
$this->addRule(array('下雨' => 1, '有车' => 0, '有事' => 0), '呆家');
$this->addRule(array('下雨' => 1, '有车' => 0, '有事' => 1), '出门');
$this->addRule(array('下雨' => 0, '有车' => 1, '有事' => 1), '出门');
$this->addRule(array('下雨' => 0, '有车' => 0, '有事' => 1), '出门');
$this->addRule(array('下雨' => 0, '有车' => 1, '有事' => 0), '呆家');
}
}
$r = new RainTable();
echo $r->decide(array('下雨' => 1, '有车' => 1, '有事' => 1)); // 输出:出门
echo $r->decide(array('有车' => 0, '有事' => 0, '下雨' => 1)); // 输出:呆家