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<?php |
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/** |
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* JPGraph v4.0.3 |
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*/ |
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namespace Amenadiel\JpGraph\Image; |
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/** |
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* // File: JPGRAPH_ANTISPAM.PHP |
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* // Description: Genarate anti-spam challenge |
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* // Created: 2004-10-07 |
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* // Ver: $Id: jpgraph_antispam.php 1106 2009-02-22 20:16:35Z ljp $ |
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* // |
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* // Copyright (c) Asial Corporation. All rights reserved. |
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*/ |
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class AntiSpam |
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{ |
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private $iData = ''; |
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private $iDD; |
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1 |
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public function __construct($aData = '') |
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{ |
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1 |
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$this->iData = $aData; |
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1 |
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$this->iDD = new HandDigits(); |
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1 |
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} |
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public function Set($aData) |
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{ |
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$this->iData = $aData; |
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} |
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1 |
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public function Rand($aLen) |
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{ |
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$d = ''; |
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for ($i = 0; $i < $aLen; ++$i) { |
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if (rand(0, 9) < 6) { |
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// Digits |
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$d .= chr(ord('1') + rand(0, 8)); |
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} else { |
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// Letters |
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do { |
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$offset = rand(0, 25); |
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1 |
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} while ($offset == 14); |
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1 |
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$d .= chr(ord('a') + $offset); |
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} |
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} |
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1 |
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$this->iData = $d; |
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return $d; |
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} |
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1 |
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public function Stroke() |
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{ |
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$n = strlen($this->iData); |
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1 |
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if ($n == 0) { |
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return false; |
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} |
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1 |
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for ($i = 0; $i < $n; ++$i) { |
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if ($this->iData[$i] === '0' || strtolower($this->iData[$i]) === 'o') { |
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return false; |
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} |
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} |
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1 |
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$img = @imagecreatetruecolor($n * $this->iDD->iWidth, $this->iDD->iHeight); |
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1 |
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if ($img < 1) { |
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return false; |
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} |
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1 |
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$start = 0; |
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1 |
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for ($i = 0; $i < $n; ++$i) { |
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$dimg = imagecreatefromstring(base64_decode($this->iDD->chars[strtolower($this->iData[$i])][1], true)); |
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imagecopy($img, $dimg, $start, 0, 0, 0, imagesx($dimg), $this->iDD->iHeight); |
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$start += imagesx($dimg); |
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} |
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$resimg = @imagecreatetruecolor($start + 4, $this->iDD->iHeight + 4); |
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if ($resimg < 1) { |
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return false; |
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} |
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imagecopy($resimg, $img, 2, 2, 0, 0, $start, $this->iDD->iHeight); |
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header('Content-type: image/jpeg'); |
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imagejpeg($resimg); |
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85
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1 |
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return true; |
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} |
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} |
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HuasoFoundries /
jpgraph
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