thinkPHP中使用foreach()遍历二维数组实例详解

二维数组经过一次遍历得到的是一维数组，经过两次遍历得到具体数组内的元素

public function update() {      $result = M('user')        ->where(" id = '$id' ")        ->field("  name, age, sex, grade  ")        ->select();    //var_dump($result1);die();    //开始循环遍历二维数组$result    foreach($result as $k=>$val){         if ( $val == "" ) {            continue;        }    $name= $val['name'];    $map['name'] = $name;    $update ['score'] = $score;     $res = $Model->table('user') -> where($map) -> data($update) -> save();     }}