Regex 用斜杠重写URL

如果输入

http://someone.com/hi/hello/yeah

我希望结果是

http://someone.com/?u=hi_hello_yeah

这是我到目前为止写的，它只替换没有斜杠“/”的url

---

而且，我想知道如果用户输入

http://someone.com/hi/hello/yeah

，它将重定向到

http://someone.com/hi_hello_yeah

这很棘手，因为它需要递归应用重写规则。

通过

httpd.conf

启用mod_rewrite和.htaccess，然后将此代码放入

文档根目录下的
.htaccess
：

Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /

# this recursive rule will be applied as many times as the /s in the URI
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^/]+)/(.+)$ /$1_$2 [L]

# this rule will be applied once all /s have been replaced by _
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^/]+)/?$ /?u=$1 [L,QSA]

我想你的
重写
规则的最后一行有一个输入错误

RewriteRule ^(.*)$ index.php/?u=$1 [L,QSA]

似乎应该更正为

RewriteRule ^(.*)$ index.php?u=$1 [L,QSA]


我在你的帖子中看到两个问题：

您希望获取转换后的URL值，该值由斜杠到下划线
当有人键入
/hi/hello/year
时，URL应重定向到
/hi\u hello\u year

URL重写和重定向是两个独立的操作

1.斜杠到下划线的转换
您已经有了
$\u GET['u']
变量，该变量包含
/hi/hello/year


简单地
str\u replace
ing它将为您提供转换后的URI字符串

<?
// this is the landing index.php page specified in the last rewrite rule. 

// should be "/hi/hello/year" for "/hi/hello/year" URL request. 
$rewritten_uri = isset($_GET['u']) ? $_GET['u'] : '';

// converting slashes to underscores.
$converted_uri = str_replace( '/', '_', $rewritten_uri );

// the string begins and/or ends with a slash, so remove it.
$ready_to_use_uri = trim( $converted_uri, '_' );

?>

3.合二为一
但是，上述重定向基于以下假设：服务器具有
hi\u hello\u year
文档，否则可能会导致无休止的
重写
-
重定向
循环。让我们合并并添加一个安全措施

<?
// this is the landing index.php page specified in the last rewrite rule. 

// should be "/hi/hello/year" for "/hi/hello/year" URL request. 
$rewritten_uri = isset($_GET['u']) ? $_GET['u'] : '';

// converting slashes to underscores.
$converted_uri = str_replace( '/', '_', $rewritten_uri );

// the string begins and/or ends with a slash, so remove it.
$ready_to_use_uri = trim( $converted_uri, '_' );

// redirect only when such file exists 
if ( file_exist( $ready_to_use_uri ) )
{
  header( 'Location: /' . $ready_to_use_uri );
  exit(); // unless you have some more work to do.
}

header("HTTP/1.0 404 Not Found");
echo "The document '" . $ready_to_use_uri . "' is not found on this server";
exit();
?>

链接是否总是像
http://someone.com/.../...
？它可以使用
.info
，
.net
，
.gov
？或者最坏的情况是使用类似ip的
192.168.10.123:8080/…
？
<?
$new_url = '/' . $ready_to_use_uri; // which came from the above code
header( 'Location: ' . $new_url );
exit(); // unless you have some more work to do.
?>

<?
// this is the landing index.php page specified in the last rewrite rule. 

// should be "/hi/hello/year" for "/hi/hello/year" URL request. 
$rewritten_uri = isset($_GET['u']) ? $_GET['u'] : '';

// converting slashes to underscores.
$converted_uri = str_replace( '/', '_', $rewritten_uri );

// the string begins and/or ends with a slash, so remove it.
$ready_to_use_uri = trim( $converted_uri, '_' );

// redirect only when such file exists 
if ( file_exist( $ready_to_use_uri ) )
{
  header( 'Location: /' . $ready_to_use_uri );
  exit(); // unless you have some more work to do.
}

header("HTTP/1.0 404 Not Found");
echo "The document '" . $ready_to_use_uri . "' is not found on this server";
exit();
?>