112 lines
3.0 KiB
PHP
112 lines
3.0 KiB
PHP
<?php
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/**
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* @copyright (C)2016-2099 Hnaoyun Inc.
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* @author XingMeng
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* @email hnxsh@foxmail.com
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* @date 2016年12月16日
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* 验证码生成类
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*/
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namespace core\extend\code;
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class Code
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{
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// 随机因子
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public $charset = 'ABCDEFGHKMNPRTUVWXY23456789';
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// 指定字体大小
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public $fontsize = 18;
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// 验证码长度
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public $codelen = 4;
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// 宽度
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public $width = 130;
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// 高度
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public $height = 50;
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// 验证码
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private $code;
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// 图形资源句柄
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private $img;
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// 指定的字体
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private $font;
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// 指定字体颜色
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private $fontcolor;
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// 构造方法初始化
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public function __construct()
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{
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$this->font = dirname(__FILE__) . '/elephant.ttf';
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}
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// 生成随机码
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private function createCode()
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{
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$this->charset = str_shuffle($this->charset);
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$_len = strlen($this->charset) - 1;
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for ($i = 0; $i < $this->codelen; $i ++) {
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$this->code .= $this->charset[mt_rand(0, $_len)];
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}
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}
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// 生成背景
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private function createBg()
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{
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$this->img = imagecreatetruecolor($this->width, $this->height);
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$color = imagecolorallocate($this->img, mt_rand(200, 255), mt_rand(200, 255), mt_rand(200, 255));
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imagefilledrectangle($this->img, 0, $this->height, $this->width, 0, $color);
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}
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// 生成文字
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private function createFont()
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{
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$_x = ($this->width - 10) / $this->codelen;
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for ($i = 0; $i < $this->codelen; $i ++) {
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$this->fontcolor = imagecolorallocate($this->img, mt_rand(0, 100), mt_rand(0, 100), mt_rand(0, 100));
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imagettftext($this->img, $this->fontsize, mt_rand(- 20, 20), $_x * $i + $_x / 3, $this->height / 1.4, $this->fontcolor, $this->font, $this->code[$i]);
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}
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}
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// 生成线条、雪花
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private function createLine()
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{
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for ($i = 0; $i < 6; $i ++) {
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$color = imagecolorallocate($this->img, mt_rand(100, 200), mt_rand(100, 200), mt_rand(100, 200));
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imageline($this->img, mt_rand(0, $this->width), mt_rand(0, $this->height), mt_rand(0, $this->width), mt_rand(0, $this->height), $color);
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}
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for ($i = 0; $i < 100; $i ++) {
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$color = imagecolorallocate($this->img, mt_rand(200, 255), mt_rand(200, 255), mt_rand(200, 255));
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imagestring($this->img, mt_rand(1, 5), mt_rand(0, $this->width), mt_rand(0, $this->height), '*', $color);
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}
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}
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// 输出
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private function outPut()
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{
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header('Content-type:image/png');
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imagepng($this->img);
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imagedestroy($this->img);
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}
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// 对外生成
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public function doimg()
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{
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@ob_clean(); // 清理图片输出前内容，避免生成错误！
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$this->createBg();
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$this->createCode();
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$this->createLine();
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$this->createFont();
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$this->outPut();
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}
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// 获取验证码
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public function getCode()
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{
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return strtolower($this->code);
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}
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} |