(PHP 4, PHP 5, PHP 7, PHP 8)
dir — 返回一个 Directory 类实例
以面向对象的方式访问目录。打开
directory 参数指定的目录。
directory被打开的目录
context| 版本 | 说明 |
|---|---|
| 8.0.0 |
context 现在可为空（nullable）。
|
示例 #1 dir() 示例
请特别注意下面示例中 Directory::read() 函数返回值的判断方式。
我们严格测试（值相等，并且类型相同，请参考
比较运算符 ）返回值等于 false ，因为有些情况下，目录名可能"等于" false ，导致
跳出循环。
<?php
$d = dir("/etc/php5");
echo "Handle: " . $d->handle . "\n";
echo "Path: " . $d->path . "\n";
while (false !== ($entry = $d->read())) {
echo $entry."\n";
}
$d->close();
?>以上示例的输出类似于：
Handle: Resource id #2 Path: /etc/php5 . .. apache cgi cli
注意:
目录条目返回的顺序依赖于系统。
<?php
// simple juste use FilesystemIterator
// and you can skip dot and duble dot
// and use it in array
// new FilesystemIterator( PATH , OPTIONS ) : array
$array_file_list = new FilesystemIterator( PATH_ROOT . 'folder/', FilesystemIterator::SKIP_DOTS );
?>This one's pretty nice. After getting frustrated for hunting down .jpg files in my massive music collection (PHP would run out of memory), I thought there should be a preg_ls function.
function preg_ls ($path=".", $rec=false, $pat="/.*/") {
// it's going to be used repeatedly, ensure we compile it for speed.
$pat=preg_replace("|(/.*/[^S]*)|s", "\\1S", $pat);
//Remove trailing slashes from path
while (substr($path,-1,1)=="/") $path=substr($path,0,-1);
//also, make sure that $path is a directory and repair any screwups
if (!is_dir($path)) $path=dirname($path);
//assert either truth or falsehoold of $rec, allow no scalars to mean truth
if ($rec!==true) $rec=false;
//get a directory handle
$d=dir($path);
//initialise the output array
$ret=Array();
//loop, reading until there's no more to read
while (false!==($e=$d->read())) {
//Ignore parent- and self-links
if (($e==".")||($e=="..")) continue;
//If we're working recursively and it's a directory, grab and merge
if ($rec && is_dir($path."/".$e)) {
$ret=array_merge($ret,preg_ls($path."/".$e,$rec,$pat));
continue;
}
//If it don't match, exclude it
if (!preg_match($pat,$e)) continue;
//In all other cases, add it to the output array
$ret[]=$path."/".$e;
}
//finally, return the array
return $ret;
}
Not bad for a mere 18 lines, don't you think?
Example use:
foreach (preg_ls("/etc/X11", true, "/.*\.conf/i") as $file) echo $file."\n";
Output:
/etc/X11/xkb/README.config
/etc/X11/xorg.conf-vesa
/etc/X11/xorg.conf~
/etc/X11/gui.conf
/etc/X11/xorg.conf
/etc/X11/xorg.conf-fbdevNote that the dir object will use the default encoding for non-unicode programs on Windows with PHP 5.x.
So, if you have a file named with characters unsupported by the current default encoding, the dir->read() method will return a wrong entry.
<?php
/*
** This script is on the same directory than a file named with
** unsupported characters for the current default encoding.
*/
$d = dir("./");
while(false !== ($e = $d->read()))
echo $e . '<br/>';
?>
This will print a "?" for every unsupported characters, and not the right file name. So take care if you check with is_file/is_dir right after enumerating.Regarding samuel's comment about the dir() function not supporting Unicode properly, it's all in the encoding. The function does NOT internally change Unicode characters into question marks (?), as I was first led to believe. If you simply try to output them in UTF-8, they'll show up just right.<?php
/*
New recursive PHP8
gen array path with FilesystemIterator
*/
$recurcive_path = [];
rdir(path, $recurcive_path);
var_dump($recurcive_path);
function rdir(string $path, array &$recurcive_path): string
{
if ($path != '') {
$recurcive_path[] = $path;
$array_list = iterator_to_array(new FilesystemIterator($path, FilesystemIterator::SKIP_DOTS));
foreach ($array_list as $name) {
$pathname = $name->getpathname();
if(is_dir($pathname) && $name->getfilename()[0] != '.'){
$path = rdir($pathname,$recurcive_path);
}
}
return $path;
}
return '';
}
?>to get a dir of http://www.example.com/directory
<?php
function remotedir($dir)
{
$dir = str_replace(" ", "%20", html_entity_decode($dir));
if (($rh = fopen($dir, 'rb')) === FALSE) { return false; }
$i = 0;
while (!feof($rh)) {
$archivos = fgetss($rh);
$directorio[$i++] = trim( substr($archivos,1,strpos($archivos," ",1)) );
}
fclose($rh);
return $directorio;
}
?>