PHP functions to Apache handle.htpasswd file

< ?php
/*
 
 Author : Mitko Kostov
 Weblog : http://mkostov.wordpress.com 
 Mail :mitko.kostov@gmail.com
 Date : 12/21/2007
 Used : PHP and Smarty
 
*/
// function to register user
function regUser() {      
        $filename = 'members/password/.htpasswd';
        $data = $_POST['username'].":".htpasswd($_POST['password'])."\n";
   if (is_writable($filename)) {   
            if (!$handle = fopen($filename, 'a')) {
                echo "Cannot open file ($filename)";
                exit;
            }   
            if (fwrite($handle, $data) === FALSE) {
                echo "Cannot write to file ($filename)";
                exit;
            }
            // echo "Success, wrote ($data) to file ($filename)";
            fclose($handle);
         } else {        
            echo "The file $filename is not writable";
           }
}
 
// function to show all users and passwords ( encrypted )
function showUser()
{    
     $file = file('members/password/.htpasswd');
     $array = array();
     $count = count($file);
     for ($i = 0; $i < $count; $i++)
     {
                list($username, $password) = explode(':', $file[$i]);
                $array[] = array("username" => $username, "password" => $password);
      }
 
     return $array;
}
function delUser($username) { 
   $fileName = file('members/password/.htpasswd');
   $pattern = "/". $username."/";  
   foreach ($fileName as $key => $value) {   
   if(preg_match($pattern, $value)) { $line = $key;  }
   } 
  unset($fileName[$line]); 
   if (!$fp = fopen('members/password/.htpasswd', 'w+'))
      {  
        print "Cannot open file ($fileName)";     
        exit;
      }
 
     if($fp)
      {       
        foreach($fileName as $line) { fwrite($fp,$line); }       
        fclose($fp);
      } 
}
 
// function for encrypting password   
function htpasswd($pass)
{
     $pass = crypt(trim($pass),base64_encode(CRYPT_STD_DES));
     return $pass;
}
?>