[php-list] Writing to a .htpasswd file

[Marian Briones]

Hi everyoen
I am writing an access system and it needs to be able to encrypt the
username and password to a certain directory's .htpasswd file.  I'm
not sure how to do it.  I found a link with this code:

// The following class encrypts a password, and writes it to a .htpasswd
// file for use with .htaccess encryption.

// Example usage:
//
// $username="bob";
// $password = "bob";
// $theLine = $htpasswd->genLine($username, $password);
// $htpasswd->writeFile(".htpasswd",$theLine);
//
//
//
// NOTE: Do NOT encrypt the password before calling the genLine function,
// otherwise the password will be encrypted twice, and will not work.
//
// Any questions, IM me www NLH com on AIM.  Enjoy! =)

// START CODE

class htpasswd {

    // Encrypts given password
    function encryptPW($thePW){
        $thePW = crypt(trim($thePW),base64_encode(CRYPT_STD_DES));
        return $thePW;
    }

    // Calls the encryptPW function, generates the line for writing
    function genLine($username,$password){
        $encrypted_password = encryptPW($password);
        return "$username:$encrypted_password";
    }

    // Writes data to the file
    function writeFile($theFile,$theLine){
        $fp = fopen($theFile, "a");
        $orig_size = filesize($theFile);

        // Trims all whitespace
        $theContents = file_get_contents($theFile);
        $strippedContents = str_replace(" ", "", $theContents);

        ftruncate($fp, 0);

        fwrite($fp, $strippedContents);

        // Sets file pointer to the end of the file
        fseek($fp, filesize($theFile));

        // If this is the first entry in the file, do not add a new
line before writing
        if($orig_size == 1){
            fwrite($fp, "$theLine");
        }else{
            // If this is not the first entry, write the data on a new
line in the file
            fwrite($fp, "$theLine");
        }
        fclose($fp);
    }

}

// END CODE 

But I tried the code and got a weird error that didn't make any sense.
 Can someone help shed some light so I can get this thing written
properly?