<?php
  # URL that generated this code:
  # http://txt2re.com/index-php.php3?s=%24variable%24123&-17&1&-18&-4

  $txt='$variable$123';

  $re1='(\\$)';	# Any Single Character 1
  $re2='((?:[a-z][a-z]+))';	# Word 1
  $re3='(\\$)';	# Any Single Character 2
  $re4='(123)';	# Integer Number 1

  if ($c=preg_match_all ("/".$re1.$re2.$re3.$re4."/is", $txt, $matches))
  {
      $c1=$matches[1][0];
      $word1=$matches[2][0];
      $c2=$matches[3][0];
      $int1=$matches[4][0];
      print "($c1) ($word1) ($c2) ($int1) \n";
  }

  #-----
  # Paste the code into a new php file. Then in Unix:
  # $ php x.php 
  #-----
?>