力扣--php--两数之和

<?php

class Solution
{

    /**
     * @param String $s
     * @return Integer
     */
    function firstUniqChar($nums,$target)
    {
        $arr=[];
        for ($i=0;$i<count($nums);$i++){
            if(!isset($arr[$target-$nums[$i]])){
                $arr[$nums[$i]]=$i;
            }else{
                var_dump([$arr[$target-$nums[$i]],$i]);
            }
        }
    }
}
$nums = [6,2,3,7];$target = 9;
$Solution=new Solution;
$Solution->firstUniqChar($nums,$target);

?>