Question

echo "<script language=\"javascript\">location.href='login.php';</script>";谁详细解释下，我php新手

<?php
/*
* PHP100Job v1.0
* Programmer : Msn/QQ haowubai@hotmail.com (925939)
* www.php100.com Develop a project PHP - MySQL - Apache
* Window 2003 - Preferences - PHPeclipse - PHP - Code Templates
*/
include("conn.php");

if($_GET[out]){
setcookie("cookie", "out");
echo "<script language=\"javascript\">location.href='login.php';</script>";
}

if($_POST[id]=='admin'){
$pw=md5($_POST[pw]);
if($pw=='e1bfd762321e409cee4ac0b6e841963c'){
setcookie("cookie", "ok");
echo "<script language=\"javascript\">location.href='login.php';</script>";
}
}
include("head.php");
if($_COOKIE['cookie']!='ok'){
?>

<SCRIPT language=javascript>
function Checklogin()
{
if (myform.id.value=="")
{
alert("请填写登录名");
myform.id.focus();
return false;
}
if (myform.pw.value=="")
{
alert("密码不能为空");
myform.pw.focus();
return false;
}
}
</SCRIPT>

<form action="" method="post" name="myform" onsubmit="return Checklogin();">
ID：<input type="text" name="id" /><br>
PW：<input type="password" name="pw" /> <input type="submit" name="submit" value="登陆"/>
</form>
<?
}else{
?>
<a href='?out=login'>退出</a>
<?
}
?>

Answer 1

echo "<script language=\"javascript\">location.href='login.php';</script>"; php输出js跳转代码。
里面的\"javascript\" 是转义字符。

Answer 2

就是在页面输出<script language="javascript">location.href='login.php';</script>让页面跳转到login.php页面

Answer 3

echo "<script language=\"javascript\">location.href='login.php';</script>"; php输出js跳转代码。
里面的\"javascript\" 是转义字符。让 echo 输出整条字符。

Answer 4

输出一段js代码，相当于在html页面中有以下代码
<script language="javascript">location.href='login.php';</script>
这样js执行就会跳转到login.php