lottery
一个经典抽奖概率算法实现
使用
- make 以默认配置及实例化名称实例化
// 抽奖配置
$settings = array(
array("id" => 1, 'weight' => 10, 'score' => 1),
array("id" => 2, 'weight' => 20, 'score' => 2),
array("id" => 3, 'weight' => 30, 'score' => 3),
);
$result = Lottery::make()->go($settings);
- make 设置自定义配置选项并实例化 将开启内部调试输出工具，默认关闭
// 抽奖配置
$settings = array(
array("id" => 1, 'weight' => 10, 'score' => 1),
array("id" => 2, 'weight' => 20, 'score' => 2),
array("id" => 3, 'weight' => 30, 'score' => 3),
);
$result = Lottery::make($config = array("debug" => true))->go($settings);
- make 设置实例名称并实例化
// 抽奖配置
$settings = array(
array("id" => 1, 'weight' => 10, 'score' => 1),
array("id" => 2, 'weight' => 20, 'score' => 2),
array("id" => 3, 'weight' => 30, 'score' => 3),
);
$result = Lottery::make($name = "instance", $config = array("debug" => true))->go($settings);
- make 设置配置选项和实例名称并实例化
$settings = array(
array("id" => 1, 'weight' => 10, 'score' => 1),
array("id" => 2, 'weight' => 20, 'score' => 2),
array("id" => 3, 'weight' => 30, 'score' => 3),
);
$result = Lottery::make($name = "instance", $config = array("debug" => true))->go($settings);
// 或
$result = Lottery::make($config = array("debug" => true), $name = "inatance")->go($settings);
配置选项
$config = array(
"indexField" => 'pid', // 抽奖配置中的主键字段，默认 id
"weightField" => "weights", // 抽奖配置中的权重字段，默认 weight
"debug" => true, //开启调试，默认关闭
);
方法
- 设置主键字段和权重字段
setFields($indexField = 'id', $weightField = 'weight')
- 开启/关闭 调试
debug($boolean = true)
- 执行抽奖
go($settings)
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