Laravel下生成验证码的类
发布:smiling 来源: PHP粉丝网 添加日期:2021-08-19 17:20:40 浏览: 评论:0
这篇文章主要为大家详细介绍了Laravel下生成验证码的类,具有一定的参考价值,感兴趣的小伙伴们可以参考一下,本文实例为大家分享了Laravel生成验证码的类,供大家参考,具体内容如下:
- <?php
- namespace App\Tool\Validate;
- //验证码类
- class ValidateCode {
- private $charset = 'abcdefghkmnprstuvwxyzABCDEFGHKMNPRSTUVWXYZ23456789';//随机因子
- private $code;//验证码
- private $codelen = 4;//验证码长度
- private $width = 130;//宽度
- private $height = 50;//高度
- private $img;//图形资源句柄
- private $font;//指定的字体
- private $fontsize = 20;//指定字体大小
- private $fontcolor;//指定字体颜色
- //构造方法初始化
- public function __construct()
- {
- $this->font = public_path() . '/fonts/Elephant.ttf';//注意字体路径要写对,否则显示不了图片
- $this->createCode();
- }
- //生成随机码
- private function createCode()
- {
- $_len = strlen($this->charset) - 1;
- for ($i = 0;$i < $this->codelen;++$i) {
- $this->code .= $this->charset[mt_rand(0, $_len)];
- }
- }
- //生成背景
- private function createBg()
- {
- $this->img = imagecreatetruecolor($this->width, $this->height);
- $color = imagecolorallocate($this->img, mt_rand(157, 255), mt_rand(157, 255), mt_rand(157, 255));
- imagefilledrectangle($this->img, 0, $this->height, $this->width, 0, $color);
- }
- //生成文字
- private function createFont()
- {
- $_x = $this->width / $this->codelen;
- for ($i = 0;$i < $this->codelen;++$i) {
- $this->fontcolor = imagecolorallocate($this->img, mt_rand(0, 156), mt_rand(0, 156), mt_rand(0, 156));
- imagettftext($this->img, $this->fontsize, mt_rand(-30, 30), $_x * $i + mt_rand(1, 5), $this->height / 1.4, $this->fontcolor, $this->font, $this->code[$i]);
- }
- }
- //生成线条、雪花
- private function createLine()
- {
- //线条
- for ($i = 0;$i < 6;++$i) {
- $color = imagecolorallocate($this->img, mt_rand(0, 156), mt_rand(0, 156), mt_rand(0, 156));
- imageline($this->img, mt_rand(0, $this->width), mt_rand(0, $this->height), mt_rand(0, $this->width), mt_rand(0, $this->height), $color);
- }
- //雪花
- for ($i = 0;$i < 100;++$i) {
- $color = imagecolorallocate($this->img, mt_rand(200, 255), mt_rand(200, 255), mt_rand(200, 255));
- imagestring($this->img, mt_rand(1, 5), mt_rand(0, $this->width), mt_rand(0, $this->height), '*', $color);
- }
- }
- //输出
- private function outPut()
- {
- header('Content-type:image/png');
- imagepng($this->img);
- imagedestroy($this->img);
- }
- //对外生成
- public function doimg()
- {
- $this->createBg();
- $this->createLine();
- $this->createFont();
- $this->outPut();
- }
- //获取验证码
- public function getCode()
- {
- return strtolower($this->code);
- }
- }
Tags: Laravel生成验证码
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