输入: nums = [5,7,7,8,8,10], target = 8
输出: 2

输入: nums = [5,7,7,8,8,10], target = 6
输出: 0

0 <= 数组长度 <= 50000

注意：本题与主站 34 题相同（仅返回值不同）：https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array/

class Solution {
    /**
     * @param Integer[] $nums
     * @param Integer $target
     * @return Integer
     */
    function search($nums, $target) {
        $numCount = array_count_values($nums);
        return isset($numCount[$target]) ? $numCount[$target] : 0;
    }
}