什么是L的[QSA，L] htaccess的 [英] What is L in [QSA, L] in htaccess

问题描述

QSA意味着，如果有通过与原来的URL的查询串，   它会被追加到重写（欧莱？P = 1将被改写为   ？的index.php URL =欧莱和放大器; P = 1

QSA means that if there's a query string passed with the original URL, it will be appended to the rewrite (olle?p=1 will be rewritten as index.php?url=olle&p=1.

L表示，如果规则匹配，不处理任何更多的规则集以下   这一个。

L means if the rule matches, don't process any more RewriteRules below this one.

什么都是一些简单的例子来讲解使用的L？ 我似乎无法掌握上述这样的解释。任何帮助将是非常美联社preciated。 谢谢。

Hi, what are some easy examples to explain the use of L? I can't seem to grasp this explanation above. Any help will be highly appreciated. Thanks.

推荐答案

在 QSA 标志表示要追加在的URI中现有的查询字符串的已被重写。例如：

The QSA flag means to append an existing query string after the URI has been rewritten. Example:

URL = http://example.com/foo/bar?q=blah

规则：

RewriteRule ^foo/(.*)$ /index.php?b=$1

结果= /index.php?b=bar

请注意 Q =等等走了。由于现有的查询字符串被删除赞成一个在规则的目标，（B = $ 1）的。现在，如果你有一个 QSA 标记：

Notice how the q=blah is gone. Because the existing query string is dropped in favor of the one in the rule's target, (b=$1). Now if you include a QSA flag:

RewriteRule ^foo/(.*)$ /index.php?b=$1 [QSA]

的结果变成= /index.php?b=bar&q=blah

在→标志仅仅意味着停止应用该遵循任何规则。由于相同的URL， http://example.com/foo/bar?q=blah ，并给出了规则：

The L flag simply means to stop applying any rules that follow. Given the same URL, http://example.com/foo/bar?q=blah, and given the rules:

RewriteRule ^foo - 

RewriteCond %{REQUEST_URI} !^/bar.php
RewriteRule ^(.*)$ /bar.php?z=$1 

第一条规则被应用和URI被改变地通过（通过 - 目标）。重写引擎然后处理下一条规则，并且URI被改写为 /bar.php?z=foo/bar 。当您添加一个→会发生什么来结束：

The first rule gets applied and the URI gets passed through unchanged (via the - target). The rewrite engine then processes the next rule, and the URI gets rewritten to /bar.php?z=foo/bar. What happens when you add an L to the end:

RewriteRule ^foo - [L]

RewriteCond %{REQUEST_URI} !^/bar.php
RewriteRule ^(.*)$ /bar.php?z=$1 

网址 http://example.com/foo/bar 被通过非接触传递的第一条规则，然后点击停止，因为 →标志。如果URL是 http://example.com/something/else 那么第一个规则不匹配，第二条规则被应用，重写的URI： /bar.php?z=something/else

The URL http://example.com/foo/bar gets passed through untouched from the first rule, then stops because of the L flag. If the URL is http://example.com/something/else then the first rule doesn't match and the second rule gets applied, rewriting the URI to: /bar.php?z=something/else

请注意，由于重写引擎通过所有的规则一直循环到URI停止变化，在→标志的没有的prevent的从当前迭代得到应用循环，只有进一步的规则。

Note that since the rewrite engine loops through all the rules until the URI stops changing, the L flag will not prevent the looping, only any further rules from getting applied in the current iteration.

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