请问这样写对吗？

来源：1-5 if语句简单应用

weixin_慕沐1043483

2019-07-10 12:50:42

1.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>测试最大值最小值</h1>
<form action="1.php" method="post">
<input type="text" name="num1" placeholder="请输入数字"><br>
<input type="text" name="num2" placeholder="请输入数字"><br>
<input type="text" name="num3" placeholder="请输入数字"><br>
<input type="submit" value="测试">
</form>
</body>
</html>

<?php

$num1=$_POST['num1'];
$num2=$_POST['num2'];
$num3=$_POST['num3'];

//echo $num1,$num2,$num3;
echo '<br/>';
echo max($num1,$num2,$num3);
echo '<br/>';
echo min($num1,$num2,$num3);

//echo max(12,22,33);
?>

写回答

1回答