Compare list of files

compare.php

<?php

try {

  function _trim($str) {
    return rtrim(trim($str, ' \r\t\n\0\x0B'), ' /');
  }

  # paths to compare
  $dir1 = isset($argv[1]) ? _trim($argv[1]) : null;
  $dir2 = isset($argv[2]) ? _trim($argv[2]) : null;
  
  touch("/tmp/ORIGINAL.txt");
  touch("/tmp/DESTINATION.txt");

  $tmp1 = "/tmp/ORIGINAL.txt";
  $tmp2 = "/tmp/DESTINATION.txt";

  # file type
  $ftype = isset($argv[3]) ? '*.' . _trim($argv[3]) : null;

  # file comparison
  $only_compare = false;

  if('-files' === $dir1) {
    $only_compare = true;
  } elseif(null === $dir1 || null === $dir2 || null === $ftype) {
    throw new Exception("Provide all arguments", 1);
  }

  if(false === $only_compare) {
      
    # md5sum files
    print 'Hashing the files on '. $dir1 . '/' . $ftype . PHP_EOL;
    `md5sum "{$dir1}/"{$ftype} > {$tmp1}` . PHP_EOL;

    print 'Hashing the files on '. $dir2 . '/' . $ftype . PHP_EOL;
    `md5sum "{$dir2}/"{$ftype} > {$tmp2}` . PHP_EOL;  
  }

  # compare
  print 'Comparing the files' . PHP_EOL;
  print `diff -q {$tmp1} {$tmp2}` . PHP_EOL;

  # continue
  print 'Do you want to see the differences?' . PHP_EOL;
  $handle = fopen('php://stdin', 'r');
  $line   = fgets($handle);

  if('yes' == trim($line) || 'y' == trim($line)) {
    print `diff -y {$tmp1} {$tmp2}`;
  } else {
    throw new Exception("Exiting...", 2); 
  }

} catch (Exception $e) {

  print 'Code: ' . $e->getCode() . PHP_EOL;
  print 'Message: ' . $e->getMessage() . PHP_EOL;
  print 'To make the lists and compare do: ' . PHP_EOL;
  print 'php ./compare.php PATH_1 PATH_2 FILE_TYPE' . PHP_EOL;
  print 'To just compare lists do: ' . PHP_EOL;
  print 'php ./compare.php -files';

} finally {
  if(isset($handle)) {
    fclose($handle);
  }

  print PHP_EOL;
}