PHP continue break 区别 用法

<?php

//continue 跳过当前循环，进行下一个

//break 终止当前循环

$db=new PDO("mysql:host=localhost;dbname=root","root","root");

$db->query("set names utf8");

$res=$db->query("select * from admin");

while($row=res->fetch()){

    if($row['user'!='admin']){

        //echo $row['user'];  //此处输出字段非admin的用户

        continue;

    }

   /* if($row['user']=='root'){

       break;  //如果字段账号是root就停止循环不再执行

    }*/

        echo $row['user']; //此处输出循环

}

?>