added chaptcha module

captcha/captcha.html

@@ -0,0 +1,6 @@
+<?php
+<img id="captcha" alt="captcha" src="captcha.php" />
+		<a href="#" onclick="document.getElementById(\'captcha\').src = \'img/loading_small.gif\'; window.setTimeout(function() {document.getElementById(\'captcha\').src = \'captcha.php\'}, 500); return false;">
+			<img src="img/reload.png" alt="reload" />
+		</a>
+?>

captcha/captcha.php

@@ -0,0 +1,64 @@
+<?php
+
+header('Content-Type: image/gif', true);
+header('Cache-Control: no-store', true);
+
+/* Configuration */
+$conf['width'] = 145;
+$conf['height'] = 50;
+$conf['font_size'] = 18;
+$conf['length'] = 5;
+
+$conf['fonts'] = array(
+	'technine',
+	'texasled',
+	'xband',
+	'3000',
+	'42',
+	'39smooth'
+);
+
+$conf['alphabet'] = array(
+	'A', 'B', 'C', 'D', 'E', 'F', 'G',
+	'H', 'Q', 'J', 'K', 'L', 'M', 'N',
+	'P', 'R', 'S', 'T', 'U', 'V', 'Y',
+	'W', '2', '3', '4', '5', '6', '7'
+);
+
+$img = imagecreatetruecolor($conf['width'], $conf['height']);
+//$col = imagecolorallocate($img, rand(200, 255), rand(200, 255), rand(200, 255));
+$col = imagecolorallocate($img, 255, 255, 255);
+
+imagefill($img, 0, 0, $col);
+
+$captcha = '';
+$x = 10;
+
+for ($p = 0; $p < 15; $p++) {
+	$col = imagecolorallocate($img, rand(150, 255), rand(150, 255), rand(150, 255));
+	imageline($img, rand(0, $conf['width']), rand(0, $conf['height']), rand(0, $conf['width']), rand(0, $conf['height']), $col);
+}
+
+for($i = 0; $i < $conf['length']; $i++) {
+
+	$chr = $conf['alphabet'][rand(0, count($conf['alphabet']) - 1)];
+	$captcha .= $chr;
+
+	$col = imagecolorallocate($img, rand(0, 199), rand(0, 199), rand(0, 199));
+	$font = 'fonts/' . $conf['fonts'][rand(0, count($conf['fonts']) - 1)] . '.ttf';
+
+	$y = 25 + rand(0, 20);
+	$angle = rand(0, 45);
+
+	imagettftext($img, $conf['font_size'], $angle, $x, $y, $col, $font, $chr);
+
+	$dim = imagettfbbox($conf['font_size'], $angle, $font, $chr);
+	$x += $dim[4] + abs($dim[6]) + 10;
+}
+
+imagegif($img);
+imagedestroy($img);
+
+$_SESSION['captcha'] = $captcha;
+
+?>