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php空数组随机安插

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Release： 2016-06-13 12:55:06
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php空数组随机插入

本帖最后由 mahuatengBC 于 2012-12-17 12:50:13 编辑 如题

假设现在有一个1000个元素空数组，现在要随机插入5个一等奖，随机插入10个二等奖，随机插入20个三等奖，其余的都是未中奖

也就是说，这一千个元素中必须有5个一等奖 10个二等奖 20个三等奖 其他未中奖

该如何实现呢？


------解决方案--------------------
$ar = array_merge(array_fill(0, 5, 1), array_fill(0, 10, 2), array_fill(0, 20, 3), array_fill(0, 965, 0));
shuffle($ar);

$ar 即是你需要的数组
Related labels：
ar array nbsp
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