chaoscontrol.org

String Conversion Functions

Chris — Wed, 13 Apr 2011 22:00:19 +0000

I’ve been doing some nerdy spring cleaning lately. Found this while digging through the ‘junk’ folder. Still useful so I’m posting it here for all the world to enjoy.


// Convert ASCII Text to Binary
function text2bin($string) {
    $string_array = explode("\r\n", chunk_split($string, 1));
    for ($n = 0; $n < count($string_array) - 1; $n++) {
        $newstring .= substr("0000".base_convert(ord($string_array[$n]), 10, 2), -8);
    }
    $newstring = chunk_split($newstring, 8, " ");
    return $newstring;
}

// Convert Binary to ASCII Text
function bin2text($string) {
    $string = str_replace(" ", "", $string);
    $string_array = explode("\r\n", chunk_split($string, 8));
    for ($n = 0; $n < count($string_array) - 1; $n++) {
        $newstring .= chr(base_convert($string_array[$n], 2, 10));
    }
    return $newstring;
}

// Convert ASCII Text to Hexadecimal
function ascii2hex($string) {
    return chunk_split(bin2hex($string), 2, " ");
}	

// Convert Hexadecimal to ASCII Text
function hex2ascii($string) {
    $string = str_replace(" ", "", $string);
    for ($n=0; $n

Uninstall MySQL on OS X

Chris — Wed, 13 Apr 2011 21:48:47 +0000

If you look through the MySQL support docs, there is no clear description for uninstalling MySQL in OS X. Here’s how:

Make sure MySQL isn’t running. If you have the preference pane installed, stop the server. Otherwise you can stop it from the terminal:

sudo /Library/StartupItems/MySQLCOM/MySQLCOM stop

Edit /etc/hostconfig

sudo nano /etc/hostconfig
Password:

AFPSERVER=-NO-
AUTHSERVER=-NO-
TIMESYNC=-NO-
QTSSERVER=-NO-
MYSQLCOM=-YES-

Remove or comment out (# marks the line as a comment) the line that says “MYSQLCOM=-YES-”.

Remove MySQL
Still in the terminal….

sudo rm /usr/local/mysql
sudo rm -rf /usr/local/mysql*
sudo rm -rf /Library/StartupItems/MySQLCOM
sudo rm -rf /Library/PreferencePanes/My*
sudo rm -rf /Library/Receipts/mysql*
sudo rm -rf /Library/Receipts/MySQL*
sudo rm -rf /var/db/receipts/com.mysql.*
sudo rm /etc/my.cnf

That’s it. MySQL gone.

php5 Cookie Class (mmm…. cookies!)

Chris — Wed, 06 Apr 2011 14:47:22 +0000

Freebie of the day. A php5 class for dealing with cookies. Technically it requires php 5.2 because of the added ‘httponly’ option but removing any reference to it will allow it to run under any 5.x build.

Example usage:

require 'cookies.class.php';
$cookie = new cookies('360000'); // Pass expiration value

if ($cookie->set('example', 'example') === TRUE) { // Pass cookie name and value
echo 'Cookie is set!';
 }
echo $cookie->value('example');

Here’s the full code:


 * ------------------------------------------------------------------------------------------------
 * @author          Chris Sprague (chris@chaoscontrol.org)
 * @license         LGPL http://www.gnu.org/licenses/lgpl.html
 * @link            http://chaoscontrol.org
 * @version    	    1.0.0
 * @requires        php 5.2.0
 * ------------------------------------------------------------------------------------------------
 */

 class cookies {

    /* Class Variables ------------------------------------------------------------------------- */

    /**
     * Name of the cookie
     * @var $mixed
     */
    public $name;

    /* Public Methods -------------------------------------------------------------------------- */

    /**
     * Class constructor
     *
     * @param int $expires Number of seconds until cookie expires
     * @param mixed $path
     * @param bool $secure
     * @param bool $httponly
     * @access public
     */
    public function __construct($expires, $path = '/', $secure = FALSE, $httponly = FALSE) {
        $this->expiration = $expires;
        $this->path = $path;
        $this->domain = '.' . $_SERVER["SERVER_NAME"];
        $this->secure = $secure;
        $this->httponly = $httponly;
    }

    /**
     * Deletes a cookie
     *
     * @param mixed $name
     * @return bool
     * @access public
     */
    public function delete($name) {
        if (headers_sent() === FALSE) {

           setcookie (
                $name,
                "",
                time() - 3600 * 25,
                $this->path,
                $this->domain,
                $this->secure,
                $this->httponly);

            // Confirm Deletion
            if ($this->check($name) === FALSE) {
                return TRUE;
            }
        }
        return FALSE;
    }

    /**
     * Creates a cookie
     *
     * @param mixed $name
     * @param mixed $data
     * @return bool
     * @access public
     */
    public function set($name, $data = '') {
        if (headers_sent() === FALSE) {

            setcookie (
                $name,
                serialize($data),
                time() + $this->expiration,
                $this->path,
                $this->domain,
                $this->secure,
                $this->httponly);

            // Set $_COOKIE value for same page load
            $_COOKIE[$name] = serialize($data);

            // Confirm Set
            if ($this->check($name) === TRUE) {
                return TRUE;
            }
        }
        return FALSE;
    }

    /**
     * Returns the value of a cookie
     *
     * @param mixed $name
     * @return mixed
     * @access public
     */
    public function value($name) {
        if ($this->check($name) === TRUE) {
            return unserialize($_COOKIE[$name]);
        }
        return FALSE;
    }

    /**
     * Check the existance of a cookie
     *
     * @param mixed $name
     * @return bool
     * @access public
     */
    public function check($name) {
        return isset($_COOKIE[$name]);
    }

    /* Private Methods ------------------------------------------------------------------------- */

    /* Protected Methods ----------------------------------------------------------------------- */

}

Last.FM Top Albums WP Plugin

Chris — Mon, 04 Apr 2011 15:29:07 +0000

I’ve been meaning to package this into a proper WordPress plugin but have been too lazy/busy/etc. In the meantime, here it is in it’s raw form.

Oh, what it does is get your top albums from Last.FM and displays the album art in a pretty table. The XML file gets cached so it wont make an API call to the Last.FM servers on each page load.

It uses simplexml so you’ll need to be running at least php 5.

Dirty Install: Add your username and API key, create a folder in your wordpress plugins directory called CCO-LastFM_Top_Albums and save the below code in index.php of said directory. Call the function in your template.

';
    foreach ($xml->topalbums->album as $album) {
        echo '
        
            image . ' class="album_art" />
        ';

        if ($i >= $div) {
            echo '
';
            $i = 1;
        } else {
            $i++;
        }
    }
    echo '';
}

B’ak’tun Countdown Widget

Chris — Sun, 27 Mar 2011 16:21:12 +0000

Displays a countdown to December 21st 2012, marking the end of the 13th b’ak’tun of the Mayan long count calendar. AKA, the end of the world for the doomsdayists!

Download Here: B'ak'tun Countdown Widget (20)

Mac OS X 10.4 Tiger is required. If you’re using Safari, click the download link. When the widget download is complete, show Dashboard, click the Plus sign to display the Widget Bar and click the widget’s icon in the Widget Bar to open it. If you’re using a browser other than Safari, click the download link. When the widget download is complete, unarchive it and place it in /Library/Widgets/ in your home folder. show Dashboard, click the Plus sign to display the Widget Bar and click the widget’s icon in the Widget Bar to open it.

Hello world!

Chris — Wed, 23 Mar 2011 20:46:30 +0000

Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!