重写任意数量的路径段以查询参数

Question

我有这个.htaccess规则:

RewriteRule viewshoplatest/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/(.*)/$ /viewshoplatest.php?$1=$2&$3=$4&$5=$6&$7=$8&$9=$10&$11=$12&$13=$14&$15=$16

它应该映射这样的URL:

http://www.veepiz.com/viewshoplatest/start/10/end/10/filter/0/ownerid/0/sortby/date/sortdir/DESC/cat/0/scat/0/

对此:

http://www.veepiz.com/viewshoplatest.php?start=0&end=10&filter=0&ownerid=0&sortby=date&sortdir=DESC&cat=0&scat=0

当我点击链接并打印$_GET变量时,我得到了这个:

Array ( [start] => 10 [end] => 10 [filter] => 0 [ownerid] => 0 [sortby] => start0 [start1] => start2 [start3] => start4 [start5] => start6 )

关于它为什么表现不好的任何想法？

---

好吧,我通过重写规则来解决这个问题

RewriteRule viewshoplatest/start/(.*)/end/(.*)/filter/(.*)/ownerid/(.*)/sortby/(.*)/sortdir/(.*)/cat/(.*)/scat/(.*)/$ /viewshoplatest.php?start=$1&end=$2&filter=$3&ownerid=$4&sortby=$5&sortdir=$6&cat=$7&scat=$8

Answer 1

首先:你不应该使用,.*如果你可以更具体,就像在这种情况下[^/]+.因为多个.*可以导致巨大的回溯.所以:

RewriteRule ^viewshoplatest/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/$ /viewshoplatest.php?$1=$2&$3=$4&$5=$6&$7=$8&$9=$10&$11=$12&$13=$14&$15=$16

您可以使用像RegexBuddy这样的内容来查看这些正则表达式的处理方式.

但由于mod_rewrite只允许引用前九个组(参见Tim的答案),您可以使用迭代方法并一次处理一个参数:

RewriteRule ^viewshoplatest/([^/]+)/([^/]+)/([^/]+/[^/]+/.*)$ /viewshoplatest/$3?$1=$2 [QSA,N]
RewriteRule ^viewshoplatest/([^/]+)/([^/]+)/([^/]*)/?$ /viewshoplatest.php?$1=$2&$3 [QSA,L]

第一个规则将一次处理一个参数对(最后一对除外),将其附加到已存在的参数对(请参阅QSA标志),然后重新启动重写过程而不增加内部递归计数器(请参阅N标志).然后第二个规则将重写最后一个参数对(或只是名称)并结束迭代.

但是因为使用N标志可能会有危险,因为它可能导致无限递归,您也可以使用PHP来解析请求的路径:

$_SERVER['REQUEST_URI_PATH'] = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
$segments = implode('/', trim($_SERVER['REQUEST_URI_PATH'], '/'));
array_shift($segments); // remove path prefix "/viewshoplatest"
for ($i=0, $n=count($segments); $i<$n; ) {
    $_GET[rawurldecode($segments[$i++])] = ($i < $n) ? rawurldecode($segments[$i++]) : null;
}

现在您只需要此规则就可以通过以下方式传递请求:

RewriteRule ^viewshoplatest(/|$) /viewshoplatest.php [L]