Find Number of lines in a folder

Question

Is it possible using PHP to parse through an entire directory to find number of lines of code in all the files in the dir so this value can be output to the screen - using PHP?

Answer 1

This wouldn't be particularly efficient, but you could load each file in the directory and count the number of lines:

$total_lines = 0;
chdir($directory);

foreach (glob("*") as $file)
{
  if (is_file($file))
  {
    $total_lines += count(file($file));
  }
}

You might want a more restrictive glob construct if the directory contains non-text files as well.

Answer 2

$dit = new DirectoryIterator(".");
$count = 0;
$dit->rewind();
while ($dit->valid()) {
    if ($dit->isFile()) {
        foreach (new SplFileObject($dit->current()) as $line) {
            $count++;
        }
    }
    $dit->next();
}
echo $count; //output line count

To include subdirectories:

$dit = new RecursiveIteratorIterator(new RecursiveDirectoryIterator("."));
$count = 0;
$dit->rewind();
while ($dit->valid()) {
    if ($dit->isFile()) {
        foreach (new SplFileObject($dit->current()) as $line) {
            $count++;
        }
    }
    $dit->next();
}
echo $count; //output line count

Answer 3

Yes it is possible.

By compining information from here and here you get:

<?php
  if ($handle = opendir('.')) {
    $count = 0;
    while (false !== ($file = readdir($handle))) {
      if ($file != "." && $file != "..") {
        $lines = file($file); 
        $count += count($lines);
    }
    closedir($handle);
    echo($count);
  }
?>

Answer 4

If you don't have to use this on Windows, you could likely just use a shell command

echo (int) exec('wc -l filename.txt');

From the wc man page:

wc - print the number of newlines, words, and bytes in files

    -l, --lines
      print the newline counts

Otherwise use Daniel's or Artefacto's approach.