有沒有作業(yè)答案，參考一下
3
0
0
HTML頁(yè)面
<!DOCTYPE html>
<html lang="en">
<head>
? ?<meta charset="UTF-8">
? ?<title>成績(jī)</title>
</head>
<body>
<form action="cjpd.php" method="POST">
? ?<input type="text" name="num1" value="在這里輸入分?jǐn)?shù)"
onfocus="if (value=='在這里輸入分?jǐn)?shù)')value='' ">
? ?<input type="submit"value="提交">
</form>
</body>
</html>
PHP頁(yè)面
<meta charset="utf8">
<?php
$cj=$_POST['num1'];
if(!is_numeric($cj) or $cj<0)
{echo '請(qǐng)正確輸入分?jǐn)?shù)';}
else if($cj>=0 and $cj<60)
{echo '不及格';}
else if ($cj>=60 and $cj<70)
{echo'及格了，要努力';}
else if($cj>=70 and $cj<80)
{echo '還不錯(cuò)';}
else if($cj>=80 and $cj<90)
{echo'上清華有希望';}
else if($cj>=90 and $cj<100)
{echo'全村人的希望';}
else if($cj==100)
{echo'太強(qiáng)了吧';}
else if($cj>100)
{echo'惹不起，惹不起';}
?>
html頁(yè)面
<!doctype html>
<html lang="en">
<head>
? ?<meta charset="UTF-8">
? ?<title>Document</title>
</head>
<body>
<form action="reg.php">
? ?姓名：<input type="text" name = "username"></br>
? ?密碼：<input type="text" name = "password"></br>
? ?<input type="submit" value = "提交">
</form>
</body>
</html>
PHP代碼：
<?php
? ?$u = $_GET["username"];
? ?echo $u;
?>
點(diǎn)擊html頁(yè)面中的提交，想要運(yùn)行PHP文件，但是結(jié)果是下載了PHP文件，想問(wèn)一下怎么回事？
