/*** 随机抽取数组元素* author: notuser* 2012-12-29*/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; ?> 复制代码