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## slice 根据指定的偏移量和数量检索一段值,类似MySQL中的limit。 例子: ~~~ $members=[ ['id'=>1,'name'=>'小明','sex'=>'男','age'=>18,'register_time'=>'2017-04-01 08:30:01'], ['id'=>2,'name'=>'小红','sex'=>'女','age'=>18,'register_time'=>'2017-04-02 12:21:32'], ['id'=>3,'name'=>'小刚','sex'=>'男','age'=>16,'register_time'=>'2017-04-05 09:10:13'], ['id'=>4,'name'=>'小丽','sex'=>'女','age'=>19,'register_time'=>'2017-04-05 12:05:27'], ['id'=>5,'name'=>'小壮','sex'=>'男','age'=>21,'register_time'=>'2017-04-08 15:41:59'] ]; $dataSource=Traversable::from($members); $result=$dataSource->slice(1,2); //从第一条开始取两条数据 foreach ($result as $s){ dump($s); } ~~~ 打印结果: ~~~ array:5 [▼ "id" => 2 "name" => "小红" "sex" => "女" "age" => 18 "register_time" => "2017-04-02 12:21:32" ] array:5 [▼ "id" => 3 "name" => "小刚" "sex" => "男" "age" => 16 "register_time" => "2017-04-05 09:10:13" ] ~~~