/**
 * 一个用于处理.htpasswd文件的PHP函数
 *
 * @param 
 * @arrange 网： www.www.jb51.cc
 **/
// 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;
}
/***   来自编程之家 jb51.cc（jb51.cc）   ***/