如何一起计算几个文件夹中的所有文件

Question

In a directory called articles i have some .txt files in it and some subdirectories, which represent a year (like 2020 , 2019 , 2018 and so on...)

The structure looks like this:

articles
   |-> 2020
        |-> 1.txt
            2.txt
            3.txt
   |-> 2019
        |-> 1.txt
            2.txt
            3.txt
   |-> 2018
        |-> 1.txt
            2.txt
            3.txt
   |-> main1.txt
       main2.txt
       main3.txt

How can i get the number of all txt files which are in the subdirectories (2020, 2019, 2018...)

I already have this:

$archive_years = array_filter(glob('articles/*'), 'is_dir'); // read dir only
foreach($archive_years as $archive_year) {
    echo count(glob($archive_year.'/*.txt')); // number of txt files form each year
   // how count number of txt files from all years together??
}

Answer 1

How about this?

<?php
$rii = new RecursiveIteratorIterator(new RecursiveDirectoryIterator('path/to/your/dir'));
$files = array();

foreach ($rii as $file) {
    if ($file->isDir() || pathinfo($file, PATHINFO_EXTENSION) != "txt") {
        continue;
    }
    
    if (!isset($files[$file->getPath()])) {
        $files[$file->getPath()] = 0;
    }
    
    $files[$file->getPath()]++;
    
}

var_dump($files);

For example, the following output is all the .cpp files in my project directory:

array(10) {
  ["mypath/src/networking"]=>
  int(2)
  ["mypath/src/thirdpart/rncryptor"]=>
  int(3)
  ["mypath/src/thirdpart/QProgressIndicator"]=>
  int(1)
  ["mypath/src/model"]=>
  int(4)
  ["mypath/src/views"]=>
  int(8)
  ["mypath/src/helper"]=>
  int(5)
  ["mypath/src/helper/deviceclient"]=>
  int(3)
  ["mypath/src/helper/deviceclient/qwe"]=>
  int(6)
  ["mypath/src/helper/view"]=>
  int(1)
  ["mypath/src"]=>
  int(1)
}