php glob - 在子文件夹中扫描文件
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php glob - scan in subfolders for a file
提问by Winston Smith
I have a server with a lot of files inside various folders, sub-folders, and sub-sub-folders.
我有一台服务器，在各种文件夹、子文件夹和子子文件夹中都有很多文件。
I'm trying to make a search.php page that would be used to search the whole server for a specific file. If the file is found, then return the location path to display a download link.
我正在尝试制作一个 search.php 页面，用于在整个服务器中搜索特定文件。如果找到该文件，则返回位置路径以显示下载链接。
Here's what i have so far:
这是我到目前为止所拥有的：
$root = $_SERVER['DOCUMENT_ROOT'];
$search = "test.zip";
$found_files = glob("$root/*/test.zip");
$downloadlink = str_replace("$root/", "", $found_files[0]);
if (!empty($downloadlink)) {
echo "<a href=\"http://www.example.com/$downloadlink\">$search</a>";
}
The script is working perfectly if the file is inside the root of my domain name... Now i'm trying to find a way to make it also scan sub-folders and sub-sub-folders but i'm stuck here.
如果文件在我的域名的根目录中，该脚本运行良好......现在我正在尝试找到一种方法让它也扫描子文件夹和子子文件夹，但我被困在这里。
回答by Tony Chen
There are 2 ways.
有2种方式。
Use globto do recursive search:
用于glob进行递归搜索：
<?php
// Does not support flag GLOB_BRACE
function rglob($pattern, $flags = 0) {
$files = glob($pattern, $flags);
foreach (glob(dirname($pattern).'/*', GLOB_ONLYDIR|GLOB_NOSORT) as $dir) {
$files = array_merge($files, rglob($dir.'/'.basename($pattern), $flags));
}
return $files;
}
?>
Use RecursiveDirectoryIterator
用 RecursiveDirectoryIterator
<?php
function rsearch($folder, $pattern) {
$dir = new RecursiveDirectoryIterator($folder);
$ite = new RecursiveIteratorIterator($dir);
$files = new RegexIterator($ite, $pattern, RegexIterator::GET_MATCH);
$fileList = array();
foreach($files as $file) {
$fileList = array_merge($fileList, $file);
}
return $fileList;
}
?>
RecursiveDirectoryIteratorcomes with PHP5 while globis from PHP4. Both can do the job, it's up to you.
RecursiveDirectoryIterator来自 PHP5 而glob来自 PHP4。两者都可以胜任，这取决于您。
回答by Quasimodo's clone
I want to provide another simple alternative for cases where you can predict a max depth. You can use a pattern with braces listing all possible subfolder depths.
我想为您可以预测最大深度的情况提供另一种简单的替代方法。您可以使用带括号的模式列出所有可能的子文件夹深度。
This example allows 0-3 arbitrary subfolders:
此示例允许 0-3 个任意子文件夹：
glob("$root/{,*/,*/*/,*/*/*/}test_*.zip", GLOB_BRACE);
Of course the braced pattern could be procedurally generated.
当然，可以通过程序生成支撑模式。
回答by Sadee
This returns fullpath to the file
这将返回文件的完整路径
function rsearch($folder, $pattern) {
$iti = new RecursiveDirectoryIterator($folder);
foreach(new RecursiveIteratorIterator($iti) as $file){
if(strpos($file , $pattern) !== false){
return $file;
}
}
return false;
}
call the function:
调用函数：
$filepath = rsearch('/home/directory/thisdir/', "/findthisfile.jpg");
And this is returns like:
这是返回如下：
/home/directory/thisdir/subdir/findthisfile.jpg
/home/directory/thisdir/subdir/findthisfile.jpg
You can improve this function to find several files like all jpeg file:
您可以改进此功能以查找多个文件，例如所有 jpeg 文件：
function rsearch($folder, $pattern_array) {
$return = array();
$iti = new RecursiveDirectoryIterator($folder);
foreach(new RecursiveIteratorIterator($iti) as $file){
if (in_array(strtolower(array_pop(explode('.', $file))), $pattern_array)){
$return[] = $file;
}
}
return $return;
}
This can call as:
这可以称为：
$filepaths = rsearch('/home/directory/thisdir/', array('jpeg', 'jpg') );
回答by metzelder
As a full solution for your problem (this was also my problem):
作为您问题的完整解决方案（这也是我的问题）：
<?php
function rsearch($folder, $pattern) {
$dir = new RecursiveDirectoryIterator($folder);
$ite = new RecursiveIteratorIterator($dir);
$files = new RegexIterator($ite, $pattern, RegexIterator::MATCH);
foreach($files as $file) {
yield $file->getPathName();
}
}
Will get you the full path of the items that you wish to find.
将为您提供要查找的项目的完整路径。
Edit: Thanks to Rousseau Alexandrefor pointing out , $pattern must be regular expression.
编辑：感谢Rousseau Alexandre指出，$pattern 必须是正则表达式。
