php显示错误消息和干净的内容

Question

我希望代码显示错误消息，同时删除页面内容

EG。

<?
echo 'welcome';
if (login==0)
{
    error("you can't access to this page");
}
content, content, content, content, content, content, content, content, content, content
ect.......
?>

输出

you can't access to this page

示例删除所有内容，但保留错误（“您无法访问此页面”）;

Answer 1

在if语句中添加exit();。使用您的示例：

<?
echo 'welcome';
if (login==0)
{
    error("you can't access to this page");
    exit();
}
content, content, content, content, content, content, content, content, content, content
ect.......
?>

Answer 2

您可以使用Matt提供的内容，这是另一种选择：

<?
echo 'welcome';
if(login==0) {
  error("you can't access to this page");
} else {
?>
content, content, content, content, content, content, content, content, content, content
<?php
}
?>