count_files.php

<!-- #!/usr/bin/env php -->
<!-- ^ Uncomment to launch from shell -->

<?php 

/**
 * Script to count the number of files in a directory and in
 * all its subdirectories.
 *
 * The function returns an array with two entries: the total number
 * of files (excluding directories) and the number of hidden files. 
 *
 * Symbolic links will not be followed, but will be included in
 * the file tally.
 *
 * Inspired by http://php.net/manual/en/function.scandir.php#110570.
 *
 * Created by Guido Walter Pettinari on 7/12/2015
 * https://gist.github.com/coccoinomane/8a0486738d20e5916eef#file-count_files-php
 */

function count_files($dir) { 

  /* Initialise outputs */
  $counter = array (0,0);

  /* Loop over each item in the directory */
  foreach (scandir($dir) as $value) {   
    
    /* Do not consider the current (.) and parent (..) dirs in the count */
    if (in_array($value, array(".","..")))
      continue; 

    /* Path of the currently considered file/directory */
    $path = $dir . DIRECTORY_SEPARATOR . $value;
            
    /* If the current item is a directory, scan it recursively.
    Do not follow symbolic links */
    if (is_dir($path) && !is_link($path)) {
      $counter_subdir = count_files($path);
      $counter[0] = $counter[0] + $counter_subdir[0];
      $counter[1] = $counter[1] + $counter_subdir[1];
    }

    /* If it is a file, increase the counter */
    else
      /* Visible files */
      if ($value[0] != '.')
        $counter[0]++;
      /* Hidden files */
      else
        $counter[1]++;

  } 

  return $counter;

} 

# Print number of files in current directory
$cwd = dirname ( __FILE__ );
$n_files = count_files($cwd);
printf ("The '%s' directory contains %d files of which %d hidden\n", $cwd, $n_files[0], $n_files[1]);

?>