Laravel 验证码

通过composer下载验证码类库 并 激活

composer require "mews/captcha:~2.0"

运行以下命令生成配置文件 config/captcha.php：

php artisan vendor:publish --provider='Mews\Captcha\CaptchaServiceProvider'

配置文件

//D:\WWW\pasalaravel\vendor\mews\captcha\config
<?php

return [

    'characters' => '2346789abcdefghjmnpqrtuxyzABCDEFGHJMNPQRTUXYZ',

    'default'   => [
        'length'    => 9,
        'width'     => 120,
        'height'    => 36,
        'quality'   => 90,
        'math'      => true,
    ],

    'flat'   => [
        'length'    => 6,
        'width'     => 160,
        'height'    => 46,
        'quality'   => 90,
        'lines'     => 6,
        'bgImage'   => false,
        'bgColor'   => '#ecf2f4',
        'fontColors'=> ['#2c3e50', '#c0392b', '#16a085', '#c0392b', '#8e44ad', '#303f9f', '#f57c00', '#795548'],
        'contrast'  => -5,
    ],

    'mini'   => [
        'length'    => 3,
        'width'     => 60,
        'height'    => 32,
    ],

    'inverse'   => [
        'length'    => 5,
        'width'     => 120,
        'height'    => 36,
        'quality'   => 90,
        'sensitive' => true,
        'angle'     => 12,
        'sharpen'   => 10,
        'blur'      => 2,
        'invert'    => true,
        'contrast'  => -5,
    ]

];

可以看到这些配置选项都非常通俗易懂，characters 选项是用来显示给用户的所有字符串，default, flat, mini, inverse 分别是定义的四种验证码类型，你可以在此修改对应选项自定义验证码的长度、背景颜色、文字颜色等属性，在此不做过多叙述。

页面显示

<img id="verify" src="{{ captcha_src('flat') }}" onclick="this.src='/captcha/flat?'+Math.random()" title="点击图片重新获取验证码" style="float:right;cursor: pointer"/>

控制器验证验证码

use Validator;

$validator = Validator::make($this->param, [
            'captcha'   => 'required|captcha',
        ],[
            'captcha.required' => '验证码不能为空',
            'captcha.captcha' => '请输入正确的验证码',
        ]);

        if ($validator->fails()) {
            return $this->jump([0, $validator->errors()->first(), []]);
        }