PHP randomly extracts elements from an array

From , 4 Years ago, written in PHP, viewed 52 times.

<? php
class getValues {
    public function inputValue($inputArray) {
        $this->inputArray = $inputArray;
    }
    public function getValue($number) {
        $this->number = $number;
        for($i = 0; $i < $this->number; $i ++) {
            $index = rand ( 0, count ( $this->inputArray ) - 1 - $i );
            $getArray [$i] = $this->inputArray [$index];
            unset ( $this->inputArray [$index] );
            for($k = $index; $k < count ( $this->inputArray ) - 1; $k ++) {
                $this->inputArray [$k] = $this->inputArray [$k + 1];
            }
        }
        //asort ( $getArray ); // 从小到大排序，根据需要修改
        return $getArray;
    }
}
 
//测试代码
$keywords = array(
                "我们",
                "你们",
                "他们"
            );
$getValue = new getValues();
$getValue->inputValue($keywords);
$key = $getValue->getValue(1);//从数组中随机抽取一个元素
echo $key;
？ >
//该片段来自于http://yuncode.net
 

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PHP randomly extracts elements from an array

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