update 的封装方法
<?php
$mysqli=new mysqli("localhost","root","","demo");
if($mysqli->connect_error){
die("连接数据库失败!".$mysqli->connect_error());
}
echo "ok<br/>";
update($mysqli,"student","stuname='小明' where id=888888");
function update($tmysqli,$table,$tiaojian){
$sql="update $table set $tiaojian";
if($tmysqli->query($sql)===true){
echo "修改成功!";
}
}
?>