驗證碼相關組件
webman/captcha
專案地址 https://github.com/webman-php/captcha
安裝
composer require webman/captcha使用
建立文件 app/controller/LoginController.php
<?php
namespace app\controller;
use support\Request;
use Webman\Captcha\CaptchaBuilder;
class LoginController
{
/**
* 測試頁面
*/
public function index(Request $request)
{
return view('login/index');
}
/**
* 輸出驗證碼圖像
*/
public function captcha(Request $request)
{
// 初始化驗證碼類
$builder = new CaptchaBuilder;
// 生成驗證碼
$builder->build();
// 將驗證碼的值存儲到session中
$request->session()->set('captcha', strtolower($builder->getPhrase()));
// 獲取驗證碼圖片二進制數據
$img_content = $builder->get();
// 輸出驗證碼二進制數據
return response($img_content, 200, ['Content-Type' => 'image/jpeg']);
}
/**
* 檢查驗證碼
*/
public function check(Request $request)
{
// 獲取post請求中的captcha字段
$captcha = $request->post('captcha');
// 對比session中的captcha值
if (strtolower($captcha) !== $request->session()->get('captcha')) {
return json(['code' => 400, 'msg' => '輸入的驗證碼不正確']);
}
return json(['code' => 0, 'msg' => 'ok']);
}
}建立模板文件app/view/login/index.html
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>驗證碼測試</title>
</head>
<body>
<form method="post" action="/login/check">
<img src="/login/captcha" /><br>
<input type="text" name="captcha" />
<input type="submit" value="提交" />
</form>
</body>
</html>進入頁面http://127.0.0.1:8787/login 界面類似如下：
常見參數設置
/**
* 輸出驗證碼圖像
*/
public function captcha(Request $request)
{
// 初始化驗證碼類
$builder = new CaptchaBuilder;
// 驗證碼長度
$length = 4;
// 包含哪些字符
$chars = '0123456789abcefghijklmnopqrstuvwxyz';
$builder = new PhraseBuilder($length, $chars);
$captcha = new CaptchaBuilder(null, $builder);
// 生成驗證碼
$builder->build();
// 將驗證碼的值存儲到session中
$request->session()->set('captcha', strtolower($builder->getPhrase()));
// 獲得驗證碼圖片二進制數據
$img_content = $builder->get();
// 輸出驗證碼二進制數據
return response($img_content, 200, ['Content-Type' => 'image/jpeg']);
}更多接口及參數參考 https://github.com/webman-php/captcha