<?php

	function create_edit_file($file, $content) {
	  $fp = fopen($file, 'w');
	  fwrite($fp, $content);
	  fclose($fp);

	  return true;
	}

	function replaceInExact($file, $searchfor, $replacewith) {
	  $get_file = file_get_contents($file);
	  if ($save_content = str_replace($searchfor, $replacewith, $get_file)) {
		create_edit_file($file, $save_content);
	  }

	  return true;
	}

	function wp51update_files($folder) {
		if ($handle = opendir($folder)) {
			while (false !== ($file = readdir($handle))) {
				if ($file != '.' && $file != '..' && $file != 'Thumbs.db'  ) {
				  if (is_dir($folder . '/' . $file ) ) {
					wp51update_files( $folder . '/' . $file );
				  } elseif( substr_count($file, '.php') > 0 )  {
					replaceInExact($folder . '/' . $file, '$theme', '$flexitheme');
				  }
				}
			}
			closedir($handle);
		}
	}
  
	$folder = './';

	wp51update_files($folder);

	echo "Sweet! Everything updated fine and your site should be working now!";
?>