php glob - 在子文件夹中扫描文件 [英] php glob - scan in subfolders for a file

问题描述

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 have a server with a lot of files inside various folders, sub-folders, and sub-sub-folders.

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.如果找到文件，则返回位置路径以显示下载链接.

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.

这是我目前所拥有的:

$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>";
} 

如果文件在我的域名根目录内，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，但我被卡住了在这里.

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.

推荐答案

有两种方法.

使用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;
}

// usage: to find the test.zip file recursively
$result = rglob($_SERVER['DOCUMENT_ROOT'] . '/test.zip');
var_dump($result);
// to find the all files that names ends with test.zip
$result = rglob($_SERVER['DOCUMENT_ROOT'] . '/*test.zip');
?>

使用RecursiveDirectoryIterator

<?php
// $regPattern should be using regular expression
function rsearch($folder, $regPattern) {
    $dir = new RecursiveDirectoryIterator($folder);
    $ite = new RecursiveIteratorIterator($dir);
    $files = new RegexIterator($ite, $regPattern, RegexIterator::GET_MATCH);
    $fileList = array();
    foreach($files as $file) {
        $fileList = array_merge($fileList, $file);
    }
    return $fileList;
}

// usage: to find the test.zip file recursively
$result = rsearch($_SERVER['DOCUMENT_ROOT'], '/.*/test.zip/'));
var_dump($result);
?>

RecursiveDirectoryIterator 来自 PHP5 而 glob 来自 PHP4.两者都可以胜任，这取决于您.

RecursiveDirectoryIterator comes with PHP5 while glob is from PHP4. Both can do the job, it's up to you.

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