$arr = array("A","B","C","D","E","F","G","H","I","J","K","L");//12个成员
然后我要从中分3次,分别抽出6/3/3个成员,不能重复
然后将第一次抽出的6个成员重新赋值为"A"
将第二次抽出的3个成员重新赋值为"B"
将剩余的3个成员重新赋值为"C"
怪我咯2017-04-10 16:51:46
<?php
$arr = array("A","B","C","D","E","F","G","H","I","J","K","L");
/**
* 抽取方法
*
* @param array 抽取成员的源数组
* @param string 抽取成员的数量
* @return array arr_new => 抽取后的源数组, data => 抽取的数据
*/
function fun($arr=array(), $number = '')
{
$a = array_rand($arr, $number);
$data = array();
foreach ($a as $v) {
$data[] = $arr[$v];
}
$arr_new = array_diff($arr, $data);
return array(
'arr_new' => $arr_new,
'data' => $data
);
}
// 第1次抽取6个
$res = fun($arr, 6);
$first_data = $res['data'];// 第1次抽取的结果
var_dump($first_data);
// 第2次抽取3个
$res = fun($res['arr_new'], 3);
$second_data = $res['data'];// 第2次抽取的结果
$second_arr = $res['arr_new'];// 剩下的结果
var_dump($second_data);
var_dump($second_arr);