<?php
$values = '';
if(!empty($_POST)){
$num = $_POST['num'];
$zhuanhuan = $_POST['zhuanhuan'];
if($zhuanhuan == 2){
$values = decbin($num);
}elseif($zhuanhuan == 8){
$values = decoct($num);
}else{
$values = dechex($num);
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<form action='' method="post">
十进制：<input type="text" name="num">
请选择要转换的进制：
<select name="zhuanhuan" id="">
<option value="2">二进制</option>
<option value="8">八进制</option>
<option value="16">十六进制</option>
</select>
<input type="submit" value="转换">
转换结果：<input type="text" value="<?php echo $values ;?>"><br>
</form>
</body>
</html>
