blocks|key|1516170|text|../../index.php+|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1516171|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>../../index.php 
</code></pre>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

blocks|key|1731278|text|您可以执行../../directory/file.txt+-这将返回两个目录。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1731279|../../../+-这是三个。等|1731280|entityMap^0|5|O|0|0|9|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

You can do <code>../../directory/file.txt</code> - This goes two directories back.

<code>../../../</code> - this goes three. etc

blocks|key|1731343|text|../../../includes/boot.inc.php|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1731344|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>../../../includes/boot.inc.php
</code></pre>

blocks|key|1516280|text|..从当前目录中选择父目录。当然，这是可以链接的：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1516281|../../index.php|code-block|syntax|javascript|1516282|这将是向上的两个目录。|1516283|entityMap^0|0|2|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

<code>..</code> selects the parent directory from the current. Of course, this can be chained:

<pre><code>../../index.php
</code></pre>

This would be two directories up.

blocks|key|1731388|text|../../../index.php|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1731389|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>../../../index.php
</code></pre>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

blocks|key|1731448|text|../../../includes/boot.inc.php|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1731449|../的每个实例意味着向上/向后返回一个目录。|unstyled|offset|length|style|CODE|1731450|entityMap^0|0|0|3|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@$G|O|H|P|I|J]]|9|@]|A|$]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>../../../includes/boot.inc.php
</code></pre>

Each instance of <code>../</code> means up/back one directory.

blocks|key|1731578|text|要将文件包含回一个目录，请使用'../file'。对于后面的两个目录，使用'../../file'。诸若此类。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1731579|不过，实际上，您不应该执行相对于当前目录的包含。如果您想要移动该文件怎么办？所有的链接都会断掉。要确保您仍然可以链接到其他文件，同时在移动文件时保留这些链接，一种方法是：|1731580|require_once($_SERVER['DOCUMENT_ROOT']+.+'directory/directory/file');|code-block|syntax|javascript|1731581|DOCUMENT_ROOT是一个服务器变量，表示代码所在的基目录。|1731582|entityMap^0|F|9|11|C|0|0|0|0|D|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

To include a file one directory back, use <code>'../file'</code>.
For two directories back, use <code>'../../file'</code>.
And so on. 

Although, realistically you shouldn't be performing includes relative to the current directory. What if you wanted to move that file? All of the links would break. A way to ensure that you can still link to other files, while retaining those links if you move your file, is: 

<pre><code>require_once($_SERVER['DOCUMENT_ROOT'] . 'directory/directory/file');
</code></pre>

<code>DOCUMENT_ROOT</code> is a server variable that represents the base directory that your code is located within.

blocks|key|1516599|text|如果在include的开头包含/，则include将被视为站点根目录的路径。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1516600|如果你的站点是包含的，你可以在/+http://www.example.com/game/forum/files/index.php+/boot.inc.php中添加一个包含，它将解析为http://www.example.com/includes/boot.inc.php。|1516601|你必须小心..遍历，因为一些web服务器禁用了它；当你想要将你的站点移到新的机器/主机上，并且结构有点不同时，它也会导致问题。|1516602|entityMap|0|LINK|mutability|MUTABLE|url|http://www.example.com/game/forum/files/index.php|1|http://www.example.com/includes/boot.inc.php^0|F|1|0|H|1D|0|2L|18|1|0|5|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@]|D|@$9|X|A|Y|1|Z]|$9|10|A|11|1|12]]|E|$]]|$1|H|3|I|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]]]

if you include the <code>/</code> at the start of the include, the include will be taken as the path from the root of the site.

if your site is <a href="http://www.example.com/game/forum/files/index.php" rel="nofollow noreferrer">http://www.example.com/game/forum/files/index.php</a> you can add an include to /includes/boot.inc.php which would resolve to <a href="http://www.example.com/includes/boot.inc.php" rel="nofollow noreferrer">http://www.example.com/includes/boot.inc.php</a> . 

You have to be careful with <code>..</code> traversal as some web servers have it disabled; it also causes problems when you want to move your site to a new machine/host and the structure is a little different.

blocks|key|1731707|text|../是一个目录，对两个目录../../甚至三个目录重复以上步骤：../../../，以此类推。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1731708|定义常量可能会减少混淆，因为您将向前钻取目录而不是向后钻取目录|1731709|你可以像这样定义一些常量：|1731710|define('BD',+'/home/user/public_html/example/');

define('HTMLBD',+'http://example.com/');|code-block|syntax|javascript|1731711|当使用'BD‘或我的'base+directory’时，它看起来是这样的：|1731712|file(BD.'location/of/file.php');|1731713|define();+reference|1731714|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.define.php^0|0|3|E|6|X|9|0|0|0|0|0|0|0|J|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]|$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|19|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|1A|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|1B|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|1C|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|1D|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|1E|8|@]|D|@$9|1F|A|1G|1|1H]]|E|$]]|$1|U|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11]]]]

<code>../</code> is one directory, Repeat for two directories <code>../../</code> or even three: <code>../../../</code> and so on. 

Defining constants may reduce confusion because you will drill forward into directories verses backwards

You could define some constants like so:

<pre><code>define('BD', '/home/user/public_html/example/');

define('HTMLBD', 'http://example.com/');
</code></pre>

When using 'BD' or my 'base directory' it looks like so:

<pre><code>file(BD.'location/of/file.php');
</code></pre>

<a href="http://php.net/manual/en/function.define.php" rel="noreferrer">define(); reference</a>

blocks|key|1516712|text|我看到了你的答案，我在语法中使用了include+path|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1516713|require_once+'../file.php';+//+server+internal+error+500|code-block|syntax|javascript|1516714|和http服务器(Apache+2.4.3)返回内部错误500。|1516715|当我将路径更改为|1516716|require_once+'/../file.php';+//+OK|1516717|百事大吉。|1516718|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I saw your answers and I used include path with syntax

<pre><code>require_once '../file.php'; // server internal error 500
</code></pre>

and http server (Apache 2.4.3) returned internal error 500.

When I changed the path to

<pre><code>require_once '/../file.php'; // OK
</code></pre>

everything is fine.

blocks|key|1516764|text|试试../../。您可以相应地修改它，因为它将使您返回两个目录。首先转到根目录，然后访问所需的目录。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1516765|例如，您在root/inc/usr/ap中，并且存在另一个目录root/2nd/path。您可以像这样从ap访问path目录：../../2nd/path首先转到根目录，而不是所需的目录。如果不能工作，请分享。|1516766|entityMap^0|2|6|0|5|F|V|D|1G|2|1K|4|1R|E|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|I|$]]

Try <code>../../</code>. You can modify it accordingly as it will take you up back two directories. First reach to root directory then access the required directory.

E.g. You are in <code>root/inc/usr/ap</code> and there is another directory <code>root/2nd/path</code>. You can access the <code>path</code> directory from <code>ap</code> like this: 
<code>../../2nd/path</code> first go to root than desired directory. If not working please share.

blocks|key|1731875|text|以下是访问不同目录的方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1731876|./+=+Your+current+directory
../+=+One+directory+lower
../../+=+Two+directories+lower
../../../+=+Three+directories+lower|code-block|syntax|javascript|1731877|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

following are ways to access your different directories:-

<pre><code>./ = Your current directory
../ = One directory lower
../../ = Two directories lower
../../../ = Three directories lower
</code></pre>

blocks|key|1516871|text|如果您使用的是php7，则可以使用级别参数为2的目录名称函数，例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1516872|dirname("/usr/local/lib",+2);|code-block|syntax|javascript|1516873|第二个参数"2“表示有多少层向上|1516874|dirname+referance|offset|length|1516875|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.dirname.php^0|0|0|0|0|H|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

if you are using php7 you can use dirname function with level parameter of 2, for example :

<pre><code>dirname("/usr/local/lib", 2);
</code></pre>

the second parameter "2" indicate how many level up 

<a href="http://php.net/manual/en/function.dirname.php" rel="noreferrer">dirname referance</a>

blocks|key|1731972|text|我建议使用__DIR__来指定current+php+file+directory。检查here以了解原因。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1731973|__DIR__+.+/../../index.php|code-block|syntax|javascript|1731974|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/5398508/6521116|1|https://stackoverflow.com/q/43917238/6521116^0|5|7|F|Q|0|18|4|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]|$9|10|A|11|1|12]]|E|$]]|$1|F|3|G|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]|S|$5|N|O|P|E|$Q|T]]]]

I recomend to use <code>__DIR__</code> to specify <a href="https://stackoverflow.com/a/5398508/6521116">current php file directory</a>. Check <a href="https://stackoverflow.com/q/43917238/6521116">here</a> for the reason.

<pre><code>__DIR__ . /../../index.php
</code></pre>

How do you include a file that is more than 2 directories back. I know you can use <code>../index.php</code> to include a file that is 2 directories back, but how do you do it for 3 directories back?
Does this make sense?
I tried <code>.../index.php</code> but it isn't working.

I have a file in <code>/game/forum/files/index.php</code> and it uses PHP include to include a file. Which is located in <code>/includes/boot.inc.php</code>; <code>/</code> being the root directory.

How do I include a file over 2 directories back?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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如何包含一个超过2个目录的文件。我知道你可以使用../index.php来包含一个返回2个目录的文件，但是如何才能包含返回3个目录呢？这有意义吗？我尝试过.../index.php，但它不起作用。我在/game/forum/files/index.php中有一个文件，它使用PHP include来包含一个文件。它位于根...

问我如何包含一个超过2个目录的文件？
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问我如何包含一个超过2个目录的文件？
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