问比较两个数组，使用数组二中的键查找数组一中的值

EN

$common = array_intersect_key($amount,$id);

$result = array();
foreach($id as $key => $value) {
    if(isset($amount[$key])) {
        $result[$key] = $amount[$key];
    }
    else {
        // handle situation where
        // $amount doesn't have that key
    }
}

$array=array();
 foreach($id as $key=>$val){
 if(array_key_exists($key,$amount)){
   $array[$key] = $amount[$key];
 };
}

print_r($array);