blocks|key|3516068|text|您必须提供file_exists的绝对路径，否则它将在当前执行路径中查找该路径。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3516069|while+(false+!==+($file+=+readdir($handle)))+{
++++$file_path+=+$dir+.+DIRECTORY_SEPARATOR+.+$file;
++++if+(file_exists($file_path)+&&+is_dir($file_path))+{
++++++++echo+"{$file}";
++++}
}|code-block|syntax|javascript|3516070|entityMap^0|5|B|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You must provide the absolute path to <code>file_exists</code>, otherwise it will look for it in the current execution path.

<pre><code>while (false !== ($file = readdir($handle))) {
 $file_path = $dir . DIRECTORY_SEPARATOR . $file;
 if (file_exists($file_path) &amp;&amp; is_dir($file_path)) {
 echo "{$file}";
 }
}
</code></pre>

blocks|key|1320515|text|您需要使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1320516|while+(false+!==+($file+=+readdir($handle)))+{
++++if(file_exists($dir.'/'.$file)+&&+is_dir($dir.'/'.$file)){echo+"{$file}";}
}|code-block|syntax|javascript|1320517|请参阅http://php.net/readdir|offset|length|1320518|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/readdir^0|0|0|3|M|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

You need to use:

<pre><code>while (false !== ($file = readdir($handle))) {
 if(file_exists($dir.'/'.$file) &amp;&amp; is_dir($dir.'/'.$file)){echo "{$file}";}
}
</code></pre>

See <a href="http://php.net/readdir" rel="nofollow noreferrer">http://php.net/readdir</a>

blocks|key|2108608|text|我觉得你不需要同时使用file_exists和is_dir|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2108609|您只需要is_dir函数。从手册中：|2108610|如果文件名存在并且是目录，则is_dir返回TRUE，否则返回FALSE。|2108611|使用以下命令：|2108612|while+(false+!==+($file+=+readdir($handle)))+{
++++++++if(is_dir($file)){echo+"{$file}";}
++++}|code-block|syntax|javascript|2108613|is_dir还会检查它是相对路径还是绝对路径。|2108614|entityMap^0|B|B|N|6|0|4|6|0|E|6|0|0|0|0|6|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|15|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|16|8|@]|D|@]|E|$O|P]]|$1|Q|3|R|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|T|$]]

I don't think you need both <code>file_exists</code> and <code>is_dir</code>, 

You just need the <code>is_dir</code> function. From the manual:

<code>is_dir</code> Returns TRUE if the filename exists and is a directory, FALSE otherwise.

Use this:

<pre><code>while (false !== ($file = readdir($handle))) {
 if(is_dir($file)){echo "{$file}";}
 }
</code></pre>

<code>is_dir</code> will also check whether it's a relative path or an absolute path.

blocks|key|573011|text|readdir的问题是它只读取目录中命名条目的字符串。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|573012|例如，如果您的文件"foo“在目录"/path/+to+/files/”中，当在"/path/to/files/“上使用readdir时，您最终会得到字符串"foo”。|573013|通常情况下，如果它与脚本的当前工作目录在同一目录中，这不是问题，但是，由于您是从任意目录读取的，所以当您尝试检查条目(文件、目录等)时，您将对裸字符串"foo“调用is_dir。|573014|我会尝试在您使用readdir提取的名称前面加上文件的路径。|573015|573016|if+($handle+=+opendir($dir))+{
++++echo+"Handle:+{$handle}\n";
++++echo+"Files:\n";

++++while+($file+=+readdir($handle))+{
++++++++/***+make+$file+into+an+absolute+path+***/
++++++++$absolute_path+=+$dir+.+'/'+.+$file;

++++++++/***+NOW+try+stat'ing+it+***/
++++++++if+(is_dir($absolute_path))+{
++++++++++++/*+it's+a+directory;+do+stuff+*/
++++++++}
++++}

++++closedir($handle);
}|code-block|syntax|javascript|573017|entityMap^0|0|7|0|1O|7|0|2A|6|0|8|7|0|0|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|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|15|8|@]|D|@]|E|$]]|$1|M|3|N|5|O|7|16|8|@]|D|@]|E|$P|Q]]|$1|R|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|S|$]]

The problem with <code>readdir</code> is that it only reads the strings of the named entries inside of the directory.

For instance, if you had file "foo" inside of directory "/path/to/files/", when using <code>readdir</code> on "/path/to/files/", you would eventually come to the string "foo".

Normally this wouldn't be a problem if it were in the same directory as the current working directory of the script, but, since you are reading from an arbitrary director, when you are attempting to inspect the entry (file, directory, whatever), you are calling <code>is_dir</code> on the bare string "foo".

I would try prefixing the name you pull out using <code>readdir</code> with the path to the file.

<hr>

<pre><code>if ($handle = opendir($dir)) {
 echo "Handle: {$handle}\n";
 echo "Files:\n";

 while ($file = readdir($handle)) {
 /*** make $file into an absolute path ***/
 $absolute_path = $dir . '/' . $file;

 /*** NOW try stat'ing it ***/
 if (is_dir($absolute_path)) {
 /* it's a directory; do stuff */
 }
 }

 closedir($handle);
}
</code></pre>

blocks|key|571798|text|$files+=+array();
foreach(new+DirectoryIteraror('/path')+as+$file){
++++if($file->isDir()+/*+&&+!$file->isDot()*/)+$files[]+=+$file->getFilename();
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|571799|[编辑:虽然你想跳过点，但把它注释掉了)|unstyled|571800|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>$files = array();
foreach(new DirectoryIteraror('/path') as $file){
 if($file-&gt;isDir() /* &amp;&amp; !$file-&gt;isDot()*/) $files[] = $file-&gt;getFilename();
}
</code></pre>

[edit: though you wanted to skip the dot, commented it out)

blocks|key|573053|text|如果您只需要起始文件夹的目录，您可以简单地执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|573054|glob('/some/path/to/search/in/*',+GLOB_ONLYDIR);|code-block|syntax|javascript|573055|它只会给你数组中的那些文件夹名称。如果希望所有目录都位于给定路径下，可以尝试使用SPL's+RecursiveDirectoryIterator|offset|length|573056|$fileSystemIterator+=+new+RecursiveIteratorIterator(
++++new+RecursiveDirectoryIterator('/some/path/to/look/in'),
++++RecursiveIteratorIterator::SELF_FIRST);|573057|迭代器可以与foreach一起使用|style|CODE|573058|$directories+=+array();
foreach($fileSystemIterator+as+$path+=>+$fileSystemObject)+{
++++if($fileSystemObject->isDir())+{
++++++++$directories[]+=+$path;
++++}
}|573059|然后，您将拥有一个数组$directories，其中包含给定路径下的所有目录。|573060|entityMap|0|LINK|mutability|MUTABLE|url|http://de.php.net/manual/en/class.recursivedirectoryiterator.php^0|0|0|14|W|0|0|0|6|7|0|0|B|C|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|14|8|@]|9|@$I|15|J|16|1|17]]|A|$]]|$1|K|3|L|5|D|7|18|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|19|8|@$I|1A|J|1B|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1C|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|1D|8|@$I|1E|J|1F|O|P]]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]]]

If you only want the directories of the starting folder, you can simply do:

<pre><code>glob('/some/path/to/search/in/*', GLOB_ONLYDIR);
</code></pre>

which would given you only those foldernames in an array. If you want all directories below a given path, try <a href="http://de.php.net/manual/en/class.recursivedirectoryiterator.php" rel="nofollow noreferrer">SPL's RecursiveDirectoryIterator</a>

<pre><code>$fileSystemIterator = new RecursiveIteratorIterator(
 new RecursiveDirectoryIterator('/some/path/to/look/in'),
 RecursiveIteratorIterator::SELF_FIRST);
</code></pre>

Iterators can be used with <code>foreach</code>:

<pre><code>$directories = array();
foreach($fileSystemIterator as $path =&gt; $fileSystemObject) {
 if($fileSystemObject-&gt;isDir()) {
 $directories[] = $path;
 }
}
</code></pre>

You will then have an array <code>$directories</code> with all directories under the given path.

blocks|key|3516271|text|我同意nuqqsa的解决方案，但是，我想补充一些。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3516272|您可以更改当前目录，而不是指定路径。|3516273|例如,|3516274|//+open+directory+handle
//+....
chdir($dir);
while+(false+!==+($file+=+readdir($handle)))
+if(is_dir($file))
++echo+$file;
//+close+directory+handle|code-block|syntax|javascript|3516275|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|P|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I agree with nuqqsa's solution, however, I'd like to add something to it.

Instead of specifying the path, you can change the current directory instead.

For example, 

<pre><code>// open directory handle
// ....
chdir($dir);
while (false !== ($file = readdir($handle)))
 if(is_dir($file))
 echo $file;
// close directory handle
</code></pre>

blocks|key|573092|text|++++++++$directory+=+scandir($path);
++++++++++++foreach($directory+as+$a){
++++++++++++++++if(is_dir($path.$a.'/')+&&+$a+!=+'.'+&&+$a+!=+'..'){
++++++++++++++++echo+$a.' ';++++++++
++++++++++++++++}
++++++++++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|573093|使用如下所示的路径，它将显示该路径中存在的文件夹。|unstyled|573094|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code> $directory = scandir($path);
 foreach($directory as $a){
 if(is_dir($path.$a.'/') &amp;&amp; $a != '.' &amp;&amp; $a != '..'){
 echo $a.'&lt;br/&gt;'; 
 }
 }
</code></pre>

With the path given as shown, it displays the folders present in the path.

I am trying to make a function that scans a folder for subfolders and then returns
a numeric array with the names of those folders.

This is the code i use for testing. Once i get it to print out the folder names and not just "." and ".." for present and above folder all will be well, and I can finish the function.

<pre><code>&lt;?php
function super_l_getthemes($dir="themes")
{

if ($handle = opendir($dir)) {
 echo "Handle: {$handle}\n";
 echo "Files:\n";


 while (false !== ($file = readdir($handle))) {
 echo "{$file}&lt;br&gt;";
 }

 closedir($handle);
}
?&gt;
</code></pre>

The above code works fine, and prints out all the contents of the folder: files, subfolders and the "." and ".."

but if i replace:

<pre><code> while (false !== ($file = readdir($handle))) {
 echo "{$file}&lt;br&gt;";
 }
</code></pre>

with:

<pre><code>while (false !== ($file = readdir($handle))) {
 if(file_exists($file) &amp;&amp; is_dir($file)){echo "{$file}";}
 }
</code></pre>

The function only prints "." and ".." , not the two folder names that I'd like it to print.

Any help is appreciated.

is_dir does not recognize folders

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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我正在尝试创建一个函数，该函数扫描文件夹中的子文件夹，然后返回一个包含这些文件夹名称的数字数组。这是我用来测试的代码。一旦我让它打印出文件夹名称，而不仅仅是“。和"..“现在和上面的文件夹都会很好，我可以完成功能。<?phpfunction super_l_getthemes($dir="themes"){if ($h...

问is_dir不识别文件夹
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