在子目录中找到编号最大的文件夹，并使用json进行处理

Question

I have folder structure like below:

-Manga
   -Berserk
      -345
      -346
   -One Piece
      -840
      -841

And want JSON output like below:

{"0" => ["name":"Berserk", "last":"346"],
 "1" => ["name":"One Piece, "last":"841"]}

Like the title says I want JSON output that gives me every series name in manga folder and biggest numbered folder that belongs to that series.

I have something like this at the moment.

<?php 
$path = dirname(__FILE__) . "/../../manga"; 
$dir = new DirectoryIterator($path); 

$data = array("mangas"=> array()); 

foreach ($dir as $fileinfo) { 
    if (!$fileinfo->isDot() && $fileinfo->getFilename() !== ".DS_Store") { 
        array_push($data["mangas"], $fileinfo->getFilename()); 
    } 
} 

header('Content-Type: application/json; charset=UTF-8'); 
echo json_encode($data); 
?>

Edit: Slim Framework API

 $app->get('/ana', function ($request, $response, $args) {

 $path = "../../manga"; 
 function getAll($path)
 {
 $dirs = [];
 foreach (new DirectoryIterator($path) as $item) {
    if (!$item->isDir() || $item->isDot()) {
        continue;
    }
    if ($max = getMaxInDir($item->getRealPath())) {
        $dirs[] = [
            'name' => $item->getFilename(),
            'last' => $max,
        ];
    }
}
return $dirs;
}

function getMaxInDir($path)
{
$max = 0;
foreach (new DirectoryIterator($path) as $item) {
    $name = $item->getFilename();
    if (!$item->isDir() || $item->isDot() || !is_numeric($name)) {
        continue;
    }
    if ($current = (int)$name > $max) {
        $max = $current;
    };
}

return $max;
}
return $this->response->withJson(getAll($path));
});

Output of http://127.0.0.1/api/public/ana

[{"name":"Berserk","last":true},{"name":"One Piece","last":true}]

Answer 1

First of all your desired output is not a valid JSON. It should rather be

[
    {"name":"Berserk","last":346},
    {"name":"One Piece","last":841}
]

Now one way to do it

echo json_encode(getAll($path));

function getAll($path)
{
    $dirs = [];
    foreach (new DirectoryIterator($path) as $item) {
        if (!$item->isDir() || $item->isDot()) {
            continue;
        }
        if ($max = getMaxInDir($item->getRealPath())) {
            $dirs[] = [
                'name' => $item->getFilename(),
                'last' => $max,
            ];
        }
    }
    return $dirs;
}

function getMaxInDir($path)
{
    $max = 0;
    foreach (new DirectoryIterator($path) as $item) {
        $name = $item->getFilename();
        if (!$item->isDir() || $item->isDot() || !is_numeric($name)) {
            continue;
        }
        if (($current = (int)$name) > $max) { // updated line
            $max = $current;
        };
    }
    return $max;
}