学习php第二天

<?php
$conn=mysql_connect("localhost","root","123456");

if(!$conn){
die('could not connect:'.mysql_error());
}
else{
//echo '链接正常<br />';
}

mysql_select_db("zuitu_db",$conn);
mysql_query("set names utf8");

//$sql="insert into `myTbl`(`username`,`userpass`) values('屈威','14a2f1r1q')";
/*$sql="update myTbl set username='小威' where id=3";
mysql_query($sql);*/

function outInfo($info){echo '<script>alert("'.$info.'");history.back();</script>';}

function myfun($aa,$bb){
if($aa==''){
outInfo("请输入用户名!");
break;
}
else if($bb==''){
outInfo('请输入密码!');
break;
}
$sql="insert into myTbl(username,userpass) values('".$aa."','".$bb."')";
$result=mysql_query($sql);
if($result){
outInfo("添加成功!");
}
else{
outInfo("程序出错!");
}
}

if ($_GET['act']=="add"){
$username=$_POST['username'];
$userpass=$_POST['userpass'];
myfun($username,$userpass);
}

mysql_close($conn);
?>

<form name="form1" id="form1" action="?act=add" method="post">
用户名:<input name="username" id="username" />
密码:<input name="userpass" id="userpass" type="password" />
<input type="submit" name="mybtn" value=" 添 加 " />
</form>