how to decode del.icio.us's captcha

This is a uncompleted script, maybe you can help me to finish it.

I try to decode the del.icio.us's captcha with the next php script.
<br /><?php<br />/* @author tiekil@gmail.com */<br />class Code {<br /> protected $_srcFile;<br /> public function __construct($file) {<br /> $this->_srcFile = $file;<br /> }<br /><br /> public function filter() {<br /> $size = getimagesize($this->_srcFile);<br /> $im = imagecreatefrompng($this->_srcFile);<br /> imagejpeg($im, $this->_srcFile . '.jpg', 100); //convert the png to jpeg<br /> $im = imagecreatefromjpeg($this->_srcFile . '.jpg');<br /> for($x=0;$x<$size[0];$x++) {<br /> for($y=0;$y<$size[1];$y++) {<br /> $rgb = imagecolorat($im,$x,$y);<br /> $r = ($rgb >> 16) & 0xFF;<br /> if ($r > 100) { // set the light color to white<br /> $rgb = imagecolorallocate($im, 255, 255, 255);<br /> } else { //javascript:void(0)<br />Publish Post set the dark color to black<br /> $rgb = imagecolorallocate($im, 0, 0, 0);<br /> }<br /> imagesetpixel($im, $x, $y, $rgb);<br /><br /> # remove the "Z" block<br /> // x-1, y-1 black<br /> $rgb = imagecolorat($im,$x-1,$y-1);<br /> $r1 = ($rgb >> 16) & 0xFF;<br /> // x-1, y white<br /> $rgb = @imagecolorat($im,$x-1,$y);<br /> $r2 = ($rgb >> 16) & 0xFF;<br /> // x, y-1 white<br /> $rgb = @imagecolorat($im,$x,$y-1);<br /> $r3 = ($rgb >> 16) & 0xFF;<br /> if (($r3 == 255) && ($r2 == 255) && ($r1 == 0)) {<br /> $rgb = imagecolorallocate($im, 255, 255, 255);<br /> if ($rgb) {<br /> imagesetpixel($im, $x-1, $y-1, $rgb);<br /> }<br /> }<br /> }<br /> }<br /> # remove others<br /> for($x=0;$x<$size[0];$x++) {<br /> for($y=0;$y<$size[1];$y++) {<br /> $rgb = imagecolorat($im,$x,$y);<br /> $r = ($rgb >> 16) & 0xFF;<br /> $rgb = imagecolorat($im,$x-1,$y);<br /> $r2 = ($rgb >> 16) & 0xFF;<br /> $rgb = imagecolorat($im,$x+1,$y);<br /> $r3 = ($rgb >> 16) & 0xFF;<br /> $rgb = imagecolorat($im,$x,$y-1);<br /> $r4 = ($rgb >> 16) & 0xFF;<br /> $rgb = imagecolorat($im,$x,$y+1);<br /> $r5 = ($rgb >> 16) & 0xFF;<br /> # clean dot<br /> if (($r == 0) && ($r2 == 255) && ($r3 == 255) && ($r4 == 255) <br /> && ($r5 == 255)) {<br /> $rgb = imagecolorallocate($im, 255,255,255);<br /> imagesetpixel($im, $x, $y, $rgb);<br /> }<br /> # clean bottom border<br /> if (($y == $size[1]-1) && ($r == 0) && ($r2 == 255) && ($r3 == 255)<br /> && ($r4 == 255)) {<br /> $rgb = imagecolorallocate($im, 255,255,255);<br /> imagesetpixel($im, $x, $y, $rgb);<br /> }<br /> # clean right border<br /> if (($x == $size[0]-1) && ($r == 0) && ($r2 == 255) && ($r4 == 255) <br /> && ($r5 == 255)) {<br /> $rgb = imagecolorallocate($im, 255,255,255);<br /> imagesetpixel($im, $x, $y, $rgb);<br /> }<br /> }<br /> }<br /> imagejpeg($im, $this->_srcFile . '.new.jpg',100);<br /> }<br />}<br /><br /># demo<br />$code = new Code('1986312480.png');<br />$code->filter();<br />?><br />
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a Zend Filter for FullShape to HalfShape

Some Chinese PHP Programers maybe need such a Zend filter to help them finish the string converting of Fullshape(全角) to HalfShape(半角), so see the next code:
<br /><?php<br />/**<br /> * @see Zend_Filter_Interface<br /> */<br />require_once 'Zend/Filter/Interface.php';<br />class Zend_Filter_FullshapeToHalfshape implements Zend_Filter_Interface<br />{<br /> /**<br /> * Defined by Zend_Filter_Interface<br /> *<br /> * Returns the string $value, removing all but alphabetic and digit characters<br /> *<br /> * @param string $value<br /> * @return string<br /> */<br /> public function filter($value)<br /> {<br /> $patterns = array('/０/','/１/','/２/','/３/','/４/','/５/','/６/','/７/',<br /> '/８/','/９/','/ａ/','/ｂ/','/ｃ/','/ｄ/','/ｅ/','/ｆ/','/ｇ/','/ｈ/','/ｉ/',<br /> '/ｊ/','/ｋ/','/ｌ/','/ｍ/','/ｎ/','/ｏ/','/ｐ/','/ｑ/','/ｒ/','/ｓ/','/ｔ/',<br /> '/ｕ/','/ｖ/','/ｗ/','/ｘ/','/ｙ/','/ｚ/','/Ａ/','/Ｂ/','/Ｃ/','/Ｄ/','/Ｅ/',<br /> '/Ｆ/','/Ｇ/','/Ｈ/','/Ｉ/','/Ｊ/','/Ｋ/','/Ｌ/','/Ｍ/','/Ｎ/','/Ｏ/','/Ｐ/',<br /> '/Ｑ/','/Ｒ/','/Ｓ/','/Ｔ/','/Ｕ/','/Ｖ/','/Ｗ/','/Ｘ/','/Ｙ/','/Ｚ/','/·/',<br /> '/～/','/！/','/＠/','/＃/','/％/','/……/','/＆/','/×/','/（/','/）/','/－/',<br /> '/——/','/＝/','/＋/','/【/','/｛/','/】/','/｝/','/＼/','/｜/','/；/','/：/',<br /> '/‘/','/’/','/“/','/”/','/，/','/《/','/。/','/》/','/、/','/？/');<br /> $replacements = array('0','1','2','3','4','5','6','7','8','9','a','b','c',<br /> 'd','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u',<br /> 'v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M',<br /> 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z','.','~','!','@','#',<br /> '%','......','&','*','(',')','-','_','=','+','[','{',']','}','\\','|',';',<br /> ':','\'','\'','\"','\"',',','<','.','>',',','?');<br /> return preg_replace($patterns, $replacements, (string) $value);<br /> }<br />}<br />?><br />

How to use code highlighter in blogger?

Because the blogger will auto replace "\n" to "<br />", so maybe you will found your Code Syntax Highlighter should not work again, but it is easy to resolve this problem.

find the javascript file named "shCore.js", at the last few lines, you will found

highlighter.Highlight(element[propertyName]);

you need insert the next line before it:

element[propertyName] = element[propertyName].replace(/<br \/>/g,"\n");

it will reformat the data in your textarea before transform it to the highlighter.

PHP Random String Function

<br /><?php<br />/**<br /> * @version $Id: iString.php 25 2007-05-24 16:12:11Z $<br /> *<br /> */<br />class iString {<br /> protected $_digits = '0123456789';<br /> protected $_lowercaseAlphas = 'abcdefghijklmnopqrstuvwxyz';<br /> protected $_uppercaseAlphas = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';<br /> protected $_characters;<br /><br /> public function getRandom($minLength = 4, $maxLength = 4, $hasDigit = true,<br /> $hasLowercaseAlpha = false, $hasUppercaseAlpha = false) {<br /> $stringLength = rand($minLength, $maxLength);<br /> if ($hasDigit) $this->_characters = $this->_digits;<br /> if ($hasLowercaseAlpha) $this->_characters .= $this->_lowercaseAlphas;<br /> if ($hasUppercaseAlpha) $this->_characters .= $this->_uppercaseAlphas;<br /> $charactersLength = strlen($this->_characters);<br /> $string = '';<br /> for($i=0;$i<$stringLength;$i++) {<br /> $pos = rand(0, $charactersLength-1);<br /> $string .= substr($this->_characters, $pos, 1);<br /> }<br /> return $string;<br /> }<br /><br /> /**<br /> * encrypt a string<br /> *<br /> * @param string $string<br /> * @return string<br /> */<br /> public function encrypt( $string ) {<br /> return md5(md5($string));<br /> }<br /><br />}<br />?><br />