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262 lines
7.5 KiB
PHP
Executable File
262 lines
7.5 KiB
PHP
Executable File
<?php
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// +----------------------------------------------------------------------
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// | ShopXO 国内领先企业级B2C免费开源电商系统
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// +----------------------------------------------------------------------
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// | Copyright (c) 2011~2019 http://shopxo.net All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: Devil
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// +----------------------------------------------------------------------
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namespace base;
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/**
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* 验证码驱动
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2016-12-01T21:51:08+0800
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*/
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class Verify
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{
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private $img;
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private $rand_string;
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private $width;
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private $height;
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private $length;
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private $use_point_back;
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private $use_line_back;
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private $use_bg_color_back;
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private $use_text_color_back;
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private $key_verify;
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private $expire_time;
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/**
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* [__construct 构造方法]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-05T16:42:49+0800
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* @param [int] $param['width'] [宽度（默认65）]
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* @param [int] $param['height'] [高度（默认30）]
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* @param [int] $param['length'] [验证码位数（默认6）]
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* @param [boolean] $param['use_point_back'] [是否添加干扰点（默认 true）]
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* @param [boolean] $param['use_line_back'] [是否添加干扰线（默认 true）]
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* @param [boolean] $param['use_bg_color_back'] [是否使用彩色背景（默认 true）]
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* @param [boolean] $param['use_text_color_back'] [是否使用彩色文本（默认 true）]
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* @param [string] $param['key_prefix'] [验证码种存储前缀key（默认 空）]
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* @param [int] $param['expire_time'] [到期时间（默认30）单位（秒）]
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*/
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public function __construct($param = array())
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{
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// 验证码规则
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$rules = MyC('common_images_verify_rules', [], true);
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// 参数处理
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$this->width = isset($param['width']) ? intval($param['width']) : 65;
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$this->height = isset($param['height']) ? intval($param['height']) : 30;
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$this->length = isset($param['length']) ? intval($param['length']) : 4;
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$this->use_point_back = isset($param['use_point_back']) ? $param['use_point_back'] : in_array('point', $rules);
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$this->use_line_back = isset($param['use_line_back']) ? $param['use_line_back'] : in_array('line', $rules);
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$this->use_bg_color_back = isset($param['use_bg_color_back']) ? $param['use_bg_color_back'] : in_array('bgcolor', $rules);
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$this->use_text_color_back = isset($param['use_text_color_back']) ? $param['use_text_color_back'] : in_array('textcolor', $rules);
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$this->key_verify = isset($param['key_prefix']) ? trim($param['key_prefix']).'_verify_code' : '_verify_code';
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$this->expire_time = isset($param['expire_time']) ? intval($param['expire_time']) : 30;
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}
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/**
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* [Entry 验证码生成]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-05T16:55:19+0800
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*/
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public function Entry()
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{
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// 验证码生成
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$this->rand_string = $this->GetRandString();
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// 创建一个画布（真色彩）
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$this->img = imagecreatetruecolor($this->width, $this->height);
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// 画背景
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if($this->use_bg_color_back == true)
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{
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$back_color = imagecolorallocate($this->img, rand(200,255), rand(200,255), rand(200,255));
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} else {
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$back_color = imagecolorallocate($this->img, 255, 255, 255);
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}
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imagefilledrectangle($this->img, 0, 0, $this->width, $this->height, $back_color);
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// 加入干扰，画出多条线
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if($this->use_line_back == true)
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{
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$this->InterferenceLine();
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}
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// 加入干扰，画出点
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if($this->use_point_back == true)
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{
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$this->InterferencePoint();
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}
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// 将生成好的字符串写入图像
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$each_width = intval($this->width/$this->length);
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$first = 40/100*$each_width;
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foreach(str_split($this->rand_string) as $k=>$v)
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{
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// 是否使用彩色文本
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if($this->use_text_color_back == true)
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{
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$fgcolor = imagecolorallocate($this->img, rand(0,200), rand(0,255), rand(0,255));
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} else {
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$fgcolor = imagecolorallocate($this->img, 0, 0, 0);
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}
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$temp_height = 95/100*$this->height;
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if($this->height-$temp_height < 15)
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{
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$temp_height = $this->height-15;
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}
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imagestring($this->img, rand(3,5), $k*$each_width+$first, rand(5/100*$this->height,$temp_height), strtoupper($v), $fgcolor);
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}
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// 种session
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$this->KindofSession();
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// 输出图像
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ob_clean();
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header('Content-Type: image/gif');
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imagegif($this->img);
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// 销毁图像
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imagedestroy($this->img);
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}
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/**
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* [CheckExpire 验证码是否过期]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-05T19:02:26+0800
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* @return [boolean] [有效true, 无效false]
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*/
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public function CheckExpire()
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{
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if(isset($_SESSION[$this->key_verify]))
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{
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$data = $_SESSION[$this->key_verify];
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return (time() <= $data['time']+$this->expire_time);
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}
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return false;
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}
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/**
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* [CheckCorrect 验证码是否正确]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-05T16:55:00+0800
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* @param [string] $verify [验证码（默认从post读取）]
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* @return [booolean] [正确true, 错误false]
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*/
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public function CheckCorrect($verify = '')
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{
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if(isset($_SESSION[$this->key_verify]['verify']))
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{
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if(empty($verify) && isset($_POST['verify']))
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{
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$verify = trim($_POST['verify']);
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}
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return ($_SESSION[$this->key_verify]['verify'] == strtolower($verify));
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}
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return false;
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}
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/**
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* [Remove 验证码清除]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-08T10:18:20+0800
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* @return [other] [无返回值]
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*/
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public function Remove()
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{
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if(isset($_SESSION[$this->key_verify]))
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{
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unset($_SESSION[$this->key_verify]);
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}
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}
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/**
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* [KindofSession 种验证码session]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-05T18:52:45+0800
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*/
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private function KindofSession()
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{
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$_SESSION[$this->key_verify] = array(
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'verify' => $this->rand_string,
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'time' => time(),
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);
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}
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/**
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* [InterferencePoint 加入干扰，画点]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-05T16:55:34+0800
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*/
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private function InterferencePoint()
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{
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for($i=0; $i<200; $i++)
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{
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//产生随机的颜色
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$bgcolor = imagecolorallocate($this->img, rand(0,255), rand(0,255), rand(0,255));
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imagesetpixel($this->img, rand()%$this->width, rand()%$this->height, $bgcolor);
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}
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}
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/**
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* [InterferenceLine 加入干扰，画出多条线]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-05T16:55:46+0800
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*/
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private function InterferenceLine()
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{
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for($i=0; $i<5; $i++)
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{
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//产生随机的颜色
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$bgcolor = imagecolorallocate($this->img, rand(0,255), rand(0,255), rand(0,255));
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imageline($this->img, rand(10,90), 0, rand(0,$this->width*2), $this->height, $bgcolor);
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}
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}
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/**
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* [GetRandString 生成随机数值]
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* @author Devil
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* @blog http://gong.gg/
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* @version 0.0.1
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* @datetime 2017-03-05T16:55:54+0800
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*/
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private function GetRandString()
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{
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$origstr = '3456789abxdefghijkmnprstuvwxy';
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$string = '';
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$len = strlen($origstr);
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for($i=0; $i<$this->length; $i++)
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{
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$index = mt_rand(0, $len-1);
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$char = $origstr[$index];
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$string .= $char;
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}
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return $string;
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}
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}
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?>
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