PHP - 读取文件夹、所有子文件夹和子文件夹中的文件答案

【问题标题】：PHP - reading folder, all subfolders, and files in subfoldersPHP - 读取文件夹、所有子文件夹和子文件夹中的文件
【发布时间】：2016-11-14 17:23:07
【问题描述】：

我有一个名为“inspections”的文件夹，其中包含多个名为“location 1”、“location 2”、“location 3”等的子文件夹，每个文件夹中包含大约 10-20 个 .png 图像。

我要做的是读取“inspections”文件夹的目录，然后读取每个文件夹中的所有图像文件，然后将它们作为库返回到我的 index.php 站点上。问题是我没有收到错误消息，但脚本没有返回任何内容。我认为问题在于为每个子文件夹生成 $files 变量，因为我部署了相同的脚本来读取另一个站点上的文件夹内容。

也许有人可以指出我正确的方向？

    <?php
$dir = './inspections/';
if ($handle = opendir($dir)) 
{
    $blacklist = array('.', '..', 'default', 'default.php', 'desc.txt');
    while (false !== ($folder = readdir($handle))) 
    {
        if (!in_array($folder, $blacklist)) 
        {
            if (file_exists($dir . $folder . '/desc.txt')) 
                {
                    while (false !== ($file = readdir($handle))) 
                    {
                        if (!in_array($file, $blacklist)) 
                        {
                            $chain = file_get_contents($dir . $folder . '/chain.txt');
                            $website = file_get_contents($dir . $folder . '/website.txt');
                            $location = file_get_contents($dir . $folder . '/location.txt');
                            $desc = file_get_contents($dir . $folder . '/desc.txt', NULL, NULL, 0, 250) . '...';
                            echo "
                                <!-- Post -->
                                <div class=\"post\">
                                  <div class=\"user-block\">
                                    <img class=\"img-circle img-bordered-sm\" src=\"../dist/img/logo/logo_".$chain."\" alt=\"\">
                                        <span class=\"username\">
                                          <a href=\"".$website."\" target=\"_blank\">".$folder."</a>
                                        </span>
                                    <span class=\"description\"><i class=\"fa fa-map-pin\"></i> ".$location." - Posted on ". $date . "</span>
                                  </div>
                                  <!-- /.user-block -->
                                  <p>".$desc."</p>
                                  <div class=\"lightBoxGallery\">
                                  <a href=\"".$dir . $folder . "/".$file."\" title=\"".$file."\" data-gallery=\"\"><img src=\"".$dir . $folder . "/".$file."\" style=\"height:100px; width:100px;\"></a>
                                  </div>
                            ";
                        }
                    }
                }
        }
    }
    closedir($handle);
}
?>

编辑：遵循@JazZ 的建议，我已经调整了代码，它现在运行良好，但是，假设一个人不想显示调整大小的图片本身，而是存储在子文件夹中的缩略图（例如 ./location1/thumbs/），如何我会这样做吗？

<?php                   
$dir = './inspections/';
if ($handle = opendir($dir)) {
    $blacklist = array('.', '..', 'default', 'default.php', 'desc.txt');
    while (false !== ($folder = readdir($handle))) {
        if (!in_array($folder, $blacklist)) {

                    echo "
                        <!-- Post -->
                        <div class=\"post\">
                          <div class=\"user-block\">
                            <img class=\"img-circle img-bordered-sm\" src=\"../dist/img/logo/gallery_icon_".$chain.".jpg\" alt=\"\">
                                <span class=\"username\">
                                  <a href=\"".$website."\" target=\"_blank\">".$hotel_name."</a>".$status."
                                </span>
                            <span class=\"description\"><i class=\"fa fa-map-pin\"></i> ".$location." - Posted on ".date('jS F, Y - H:m', strtotime($posted_on))."</span>
                          </div>
                          <!-- /.user-block -->

                          <p>".$desc."</p>
                          <div class=\"lightBoxGallery\">
                    ";

                    foreach (glob($dir . $folder . "/*.jpg") as $filename) {
                        echo "
                            <a href=\"".$filename."\" title=\"\" data-gallery=\"\"><img src=\"".$filename."\" style=\"height:100px; width:100px;\"></a>";
                    }
                    echo "</div>
                        </div>
                        <!-- /. POST -->

                        ";

        }
    }
    closedir($handle);
}
?>

【问题讨论】：

标签： php gallery readdir

【解决方案1】：

我认为你的问题来自这里：

while (false !== ($file = readdir($handle))) // it reads again the same directory as it did in the first while loop

尝试替换为

if ($sub_handle = opendir($dir . $folder)) {
    while (false !== ($file = readdir($sub_handle))) {
        ...
    }
    closedir($sub_handle);
}

另外，在你的情况下，我会使用 php glob() function

查看适用于您的案例的工作示例：

$dir = './inspections/';
if ($handle = opendir($dir)) {
    $blacklist = array('.', '..', 'default', 'default.php', 'desc.txt');
    while (false !== ($folder = readdir($handle))) {
        if (!in_array($folder, $blacklist)) {
            foreach (glob($dir . $folder . "/*.png") as $filename) {
                echo "$filename was found !";
                echo "\r\n";
            }
        }
    }
    closedir($handle);
}

输出：

./inspections/location_4/img_1.png was found !
./inspections/location_4/img_2.png was found !
./inspections/location_4/img_3.png was found !
./inspections/location_4/img_4.png was found !
./inspections/location_4/img_5.png was found !
./inspections/location_4/img_6.png was found !
./inspections/location_3/img_1.png was found !
./inspections/location_3/img_2.png was found !
./inspections/location_3/img_3.png was found !
./inspections/location_3/img_4.png was found !
./inspections/location_3/img_5.png was found !
./inspections/location_3/img_6.png was found !
./inspections/location_2/img_1.png was found !
./inspections/location_2/img_2.png was found !
./inspections/location_2/img_3.png was found !
./inspections/location_2/img_4.png was found !
./inspections/location_2/img_5.png was found !
./inspections/location_2/img_6.png was found !
./inspections/location_1/img_1.png was found !
./inspections/location_1/img_2.png was found !
./inspections/location_1/img_3.png was found !
./inspections/location_1/img_4.png was found !
./inspections/location_1/img_5.png was found !
./inspections/location_1/img_6.png was found !

编辑

要在 /inspections/location1/thumbs/ 目录中循环，这会起作用：

foreach (glob($dir . $folder . "/thumbs/*.png") as $filename) {
    echo "$filename was found !";
    echo "\r\n";
}

重新编辑

要使用glob() 函数全局化多个文件夹，您的代码应如下所示：

foreach (glob($dir.$folder."{/thumbs/*.png,/*.png}", GLOB_BRACE) as $filename) {
    echo "$filename was found !";
    echo "\r\n";
}

【讨论】：

完美运行，谢谢。我唯一建议的是调整脚本以接受各种图像，而不仅限于 *.png （尽管这是我所需要和要求的，只是一个建议）。非常感谢！
假设每个位置文件夹中有一个/thumbs/ 文件夹，我如何将该文件夹包含到您的 $filename 数组中？我想为找到的每个 $filename 显示 $thumb，但这意味着该数组将需要多个变量用于 foreach loop，可以这样做吗？
你能用新的要求更新你的问题吗？今天下午会看。
@Armitage2k，好的，我编辑了答案。祝你好运。 ; )
@Armitage2k，我重新编辑了答案。（需要更多的赞成票；）。希望对您有所帮助。

【解决方案2】：

也许下面的函数会有所帮助。也有一些评论。它递归地扫描一个目录（在这种情况下，从每个目录/子目录中提取图像文件）。

<?php

    $rootPath   = './inspections/';
    $regex      = "#(\.png$)|(\.jpg$)|(\.jpeg$)|(\.tiff$)|(\.gif$)#";


    /**
     * @param string $directory    => DIRECTORY TO SCAN
     * @param string $regex        => REGULAR EXPRESSION TO BE USED IN MATCHING FILE-NAMES
     * @param string $get          => WHAT DO YOU WANT TO GET? 'dir'= DIRECTORIES, 'file'= FILES, 'both'=BOTH FILES+DIRECTORIES
     * @param bool   $useFullPath  => DO YOU WISH TO RETURN THE FULL PATH TO THE FOLDERS/FILES OR JUST THEIR BASE-NAMES?
     * @param array  $dirs         => LEAVE AS IS: USED DURING RECURSIVE TRIPS
     * @return array
     */
    function scanDirRecursive($directory, $regex=null, $get="file", $useFullPath=false,  &$dirs=[], &$files=[]) {
        $iterator               = new DirectoryIterator ($directory);
        foreach($iterator as $info) {
            $fileDirName        = $info->getFilename();

            if ($info->isFile () && !preg_match("#^\..*?#", $fileDirName)) {
                if($get == 'file' || $get == 'both'){
                    if($regex) {
                        if(preg_match($regex, $fileDirName)) {
                            if ($useFullPath) {
                                $files[] = $directory . DIRECTORY_SEPARATOR . $fileDirName;
                            }
                            else {
                                $files[] = $fileDirName;
                            }
                        }
                    }else{
                        if($useFullPath){
                            $files[]   = $directory . DIRECTORY_SEPARATOR . $fileDirName;
                        }else{
                            $files[]   = $fileDirName;
                        }
                    }
                }
            }else if ($info->isDir()  && !$info->isDot()) {
                $fullPathName   = $directory . DIRECTORY_SEPARATOR . $fileDirName;
                if($get == 'dir' || $get == 'both') {
                    $dirs[]     = ($useFullPath) ? $fullPathName : $fileDirName;
                }
                scanDirRecursive($fullPathName, $regex, $get, $useFullPath, $dirs, $files);
            }
        }

        if($get == 'dir') {
            return $dirs;
        }else if($get == 'file'){
            return $files;
        }
        return ['dirs' => $dirs, 'files' => $files];
    }

    $images    = scanDirRecursive($rootPath, $regex, 'file', true);
    var_dump($images);

【讨论】：