php 数组处理

public function testestt()
    {
        $tes=file("C:/Users/Administrator/Documents/WeChat Files/sgm4231/FileStorage/File/2019-04/usdt_block_count.txt");

        $arr=[];
        foreach ($tes as $key=>$v){
            if(strstr($v, "rc=")){
                $arr[]=$key;
            };
        }

        $arr1=[];
        $arr2=[];
        foreach ($arr as $k=>$value){
            if($value != 0){
                $arr1[]=$value-$arr[$k-1];
                $arr2[]=$value;
            }
        }

        array_unshift($arr2,0);
        array_push($arr1,count($tes)-end($arr2));

        $arrs=[];
        for ($i=0;$i<count($arr1);$i++){
            $arrs[$i]=array_slice($tes,$arr2[$i],$arr1[$i]);
        }

        dd($arrs);

    }