laravel5 验证码及乱码

谁借莪１个温暖的怀抱￠ 2022-05-20 03:06 169阅读 0赞

首先在laravel5框架public目录下创建一个控制器Code.php类,代码如下:

<?php /** * Created by PhpStorm. * User: ren68 * Date: 2018/7/11 * Time: 12:41 */ class Code
    {
        private $width; //宽
        private $height; //高
        private $num;  //数量
        private $code; //验证码
        private $img;  //图像的资源
    
        //构造方法， 三个参数
        function __construct($width=80, $height=20, $num=4) {
            $this->width = $width;
            $this->height = $height;
            $this->num = $num;
            $this->code = $this->createcode(); //调用自己的方法
        }
    
        //获取字符的验证码， 用于保存在服务器中
        function getcode() {
            return $this->code;
        }
    
        //输出图像
        function outimg() {
            //创建背景 (颜色， 大小， 边框)
            $this->createback();
    
            //画字 (大小， 字体颜色)
            $this->outstring();
    
            //干扰元素(点， 线条)
    
            $this->setdisturbcolor();
            //输出图像
            $this->printimg();
        }
    
        //创建背景
        private function createback() {
            //创建资源
            $this->img = imagecreatetruecolor($this->width, $this->height);
            //设置随机的背景颜色
            $bgcolor = imagecolorallocate($this->img, rand(225, 255), rand(225, 255), rand(225, 255));
            //设置背景填充
            imagefill($this->img, 0, 0, $bgcolor);
            //画边框
            $bordercolor = imagecolorallocate($this->img, 0, 0, 0);
    
            imagerectangle($this->img, 0, 0, $this->width-1, $this->height-1, $bordercolor);
        }
    
        //画字
        private function outstring() {
            for($i=0; $i<$this->num; $i++) {
    
                $color= imagecolorallocate($this->img, rand(0, 128), rand(0, 128), rand(0, 128));
    
                $fontsize=rand(3,5); //字体大小
    
                $x = 3+($this->width/$this->num)*$i; //水平位置
                $y = rand(0, imagefontheight($fontsize)-3);
    
                //画出每个字符
                imagechar($this->img, $fontsize, $x, $y, $this->code{
       $i}, $color);
            }
        }
    
        //设置干扰元素
        private function setdisturbcolor() {
            //加上点数
    //        for($i=0; $i<100; $i++) {
    //            $color= imagecolorallocate($this->img, rand(0, 255), rand(0, 255), rand(0, 255));
    //            imagesetpixel($this->img, rand(1, $this->width-2), rand(1, $this->height-2), $color);
    //        }
    
            //加线条
            for($i=0; $i<10; $i++) {
                $color= imagecolorallocate($this->img, rand(0, 255), rand(0, 128), rand(0, 255));
                imagearc($this->img,rand(-10, $this->width+10), rand(-10, $this->height+10), rand(30, 300), rand(30, 300), 55,44, $color);
            }
        }
    
        //输出图像
        private function printimg() {
            if (imagetypes() & IMG_GIF) {
                header("Content-type: image/gif");
                imagegif($this->img);
            } elseif (function_exists("imagejpeg")) {
                header("Content-type: image/jpeg");
                imagegif($this->img);
            } elseif (imagetypes() & IMG_PNG) {
                header("Content-type: image/png");
                imagegif($this->img);
            } else {
                die("No image support in this PHP server");
            }
    
        }
    
        //生成验证码字符串
        private function createcode() {
            $codes = "3456789abcdefghijkmnpqrstuvwxyABCDEFGHIJKLMNPQRSTUVWXY";
    
            $code = "";
    
            for($i=0; $i < $this->num; $i++) {
                $code .=$codes{rand(0, strlen($codes)-1)};
            }
    
            return $code;
        }
    
        //用于自动销毁图像资源
        function __destruct() {
            imagedestroy($this->img);exit;
        }
    
    }

然后在你需要的控制器方法中调用(我是在LoginController中调用的):

![70][]

前端页面验证码显示代码:

乱码问题如图:

![70 1][]

解决办法:

![70 2][]

[70]: /images/20220520/d53959b214e54d088c21ee3a78eec9d8.png
[70 1]: /images/20220520/5bdeac0251d6437cae0a44178c1c727d.png
[70 2]: /images/20220520/8eaf2ad62a5c45b2876ebec7f9321c49.png