检查两个多维数组 是否一致

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//检查两个多维数组 是否一直<br>　　public function foo($arr, &$rt , $key='' ,$i=0) {     if (is_array($arr)) {         foreach ($arr as $k=>$v) {             if (is_array($v)) {                 $this->foo($v ,$rt ,$k ,$i);             } else {                 $rt[$key.'->'.$k.$i] = $v;             }             $i++;         }     }     return $rt; }<br><br><br>    /**<br>     * 商品信息缓存一致性检查<br>     * @param $productId<br>     * @return bool<br>     */<br>    public function checkProductAttach($productId)<br>    {<br>        $getAttach = $this->productService->getAttach($productId);<br><br>        $getProductAttach = $this->productService->getProductAttach($productId);<br><br>        if($getProductAttach == false){<br>            Yii::$app->dataCache->getRedis()->del(['PRODUCT_ATTACH', $productId]);<br>            return true;<br>        }<br>        $isSame = $this->isSame($getAttach ,$getProductAttach );<br><br>        $arr = [];<br>        $arrCache = $this->foo($getAttach,$arr);<br>        $arrService = $this->foo($getProductAttach,$arr);<br><br>        $result = ['isSame'=>$isSame,'diff'=>array_diff($arrService, $arrCache)];<br><br>        if($isSame==false){<br>            Yii::getLogger()->log(['errorkey' => 'RedisCheckError:'.$productId , 'errorvalue' => json_encode($result['diff'])], Logger::LEVEL_ERROR);<br>        }<br>        return $result;<br>    }