mirror of
https://github.com/myvesta/vesta
synced 2025-07-16 10:03:23 -07:00
94 lines
2.9 KiB
PHP
94 lines
2.9 KiB
PHP
<?php
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require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'vesta' . DIRECTORY_SEPARATOR . 'core' . DIRECTORY_SEPARATOR . 'VestaSession.class.php';
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require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'vesta' . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'Config.class.php';
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define('V_ROOT_DIR', dirname(__FILE__) . DIRECTORY_SEPARATOR . 'vesta' . DIRECTORY_SEPARATOR);
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class Captcha
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{
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protected $width = 200;
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protected $image = null;
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protected $color1 = null;
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protected $color2 = null;
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protected $color3 = null;
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protected $keyword = '';
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public $key_len = 7;
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protected $chars = 'qw1e2r3t4y5u67o8p9as9d38f6g4h3j2k1l3z5x7c8v3b5n781234567890';
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public function __construct()
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{
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VestaSession::start();
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//var_dump(Config::get('session_dirname'));die();
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$this->image = imagecreatetruecolor($this->width, 50);
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$this->color1 = imagecolorallocate($this->image, 57, 58, 52);
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$this->color2 = imagecolorallocate($this->image, 45, 44, 40);
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$this->color3 = imagecolorallocate($this->image, 255, 255, 255);
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imagefilledrectangle($this->image, 0, 0, 249, 249, $this->color1);
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}
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public function generateImage($offset = 0)
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{
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$values = array(
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$offset, 15,
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$offset, 40,
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$offset + 14, 32,
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$offset + 14, 8,
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$offset, 15,
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$offset, 15
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);
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imagefilledpolygon($this->image, $values, 6, $this->color2);
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}
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public function draw()
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{
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$this->generateKeyword();
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for ($i = 0; $i < strlen($this->keyword) -1; $i++) {
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$this->generateImage($i * 15);
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}
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$font_file = dirname(__FILE__).DIRECTORY_SEPARATOR.'css'.DIRECTORY_SEPARATOR.'arialbd.ttf';
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imagefttext($this->image, 17, 0, 2, 31, $this->color3, $font_file, $this->keyword);
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$this->slice();
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}
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public function slice()
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{
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$width = 15;
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$height = 50;
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$dest = imagecreatetruecolor(15 * $this->key_len + 2 * $this->key_len + 8, $height);
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imagefilledrectangle($dest, 0, 0, 249, 249, $this->color1);
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for ($i = 0; $i < $this->key_len; $i++) {
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$dest_x = $i == 0 ? $i * 15 : $i * 15 + $i * 4;
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imagecopy($dest, $this->image, $dest_x, 0, $i * 15, 0, $width, $height);
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}
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header('Content-type: image/jpeg');
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imagepng($dest);
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}
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/**
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*
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*/
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protected function generateKeyword()
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{
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$this->keyword = '';
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for ($i = 0; $i < $this->key_len; $i++) {
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$this->keyword .= $this->chars[rand(0, strlen($this->chars)-1)];
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}
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$_SESSION['captcha_key'] = $this->keyword;
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return $this->keyword;
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}
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}
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$c = new Captcha();
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$c->draw();
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?>
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