Find total number of code lines

<?php
 error_reporting(0);
/**
* Counts the lines of code in this folder and all sub folders
* You may not sell this script or remove these header comments
* @author Hamid Alipour, http://blog.code-head.com/
**/

define('SHOW_DETAILS', true);

class Folder {

var $name;
var $path;
var $folders;
var $files;
var $exclude_extensions;
var $exclude_files;
var $exclude_folders;


function Folder($path) {
$this -> path = $path;
$this -> name = array_pop( array_filter( explode(DIRECTORY_SEPARATOR, $path) ) );
$this -> folders = array();
$this -> files = array();
$this -> exclude_extensions = array('gif', 'jpg', 'jpeg', 'png', 'tft', 'bmp', 'rest-of-the-file-extensions-to-exclude');
$this -> exclude_files    = array('count_lines.php', 'rest-of-the-files-to-exclude');
$this -> exclude_folders = array('_private', '_vti_bin', '_vti_cnf', '_vti_log', '_vti_pvt', '_vti_txt', 'rest-of-the-folders-to-exclude');
}

function count_lines() {
if( defined('SHOW_DETAILS') ) echo "/Folder: {$this -> path}...\n";
$total_lines = 0;
$this -> get_contents();
foreach($this -> files as $file) {
if( in_array($file -> ext, $this -> exclude_extensions) || in_array($file -> name, $this -> exclude_files) ) {
if( defined('SHOW_DETAILS') ) echo "#---Skipping File: {$file -> name};\n";
continue;
}
$total_lines += $file -> get_num_lines();
}
foreach($this -> folders as $folder) {
if( in_array($folder -> name, $this -> exclude_folders) ) {
if( defined('SHOW_DETAILS') ) echo "#Skipping Folder: {$folder -> name};\n";
continue;
}
$total_lines += $folder -> count_lines();
}
if( defined('SHOW_DETAILS') ) echo "\n Total lines in {$this -> name}: $total_lines;\n\n";
return $total_lines;
}

function get_contents() {
$contents = $this -> _get_contents();
foreach($contents as $key => $value) {
if( $value['type'] == 'Folder' ) {
$this -> folders[] = new Folder($value['item']);
} else {
$this -> files[]   = new File  ($value['item']);
}
}
}

function _get_contents() {
$folder = $this -> path;
if( !is_dir($folder) ) {
return array();
}
$return_array = array();
$count  = 0;
if( $dh = opendir($folder) ) {
while( ($file = readdir($dh)) !== false ) {
if( $file == '.' || $file == '..' ) continue;
$return_array[$count]['item'] = $folder .$file .(is_dir($folder .$file) ? DIRECTORY_SEPARATOR : '');
$return_array[$count]['type'] = is_dir($folder .$file) ? 'Folder' : 'File';
$count++;
}
closedir($dh);
}
return $return_array;
}

} // Class

class File {

var $name;
var $path;
var $ext;


function File($path) {
$this -> path = $path;
$this -> name = basename($path);
$this -> ext  = array_pop( explode('.', $this -> name) );
}

function get_num_lines() {
$count_lines = count(file($this -> path));
if( defined('SHOW_DETAILS') ) echo "|---File: {$this -> name}, lines: $count_lines;\n";
return $count_lines;
}

} // Class

$path_to_here = dirname(__FILE__) .DIRECTORY_SEPARATOR;
       
    $test= dirname($path_to_here);        
    $path_folder =  $test.'/linecount/Apps'.DIRECTORY_SEPARATOR;
$folder  = new Folder($path_folder);
echo 'Total lines of code: ' .$folder -> count_lines() ."\n\n";

?>