1、首先確認文件夾\vendor\topthink\think-captcha存在
2、顯示驗證碼的方法,我這裏是寫在:\application\admin\controller\Login.php
//顯示驗證碼
public function show_captcha(){
$captcha = new \think\captcha\Captcha();
$captcha->imageW=121;
$captcha->imageH = 32; //圖片高
$captcha->fontSize =14; //字體大小
$captcha->length = 4; //字符數
$captcha->fontttf = '5.ttf'; //字體
$captcha->expire = 30; //有效期
$captcha->useNoise = false; //不添加雜點
return $captcha->entry();
}
3、模板文件\application\admin\view\Login\index.html中這樣引用驗證碼
<form action="/login/login_post" method="post">
<input type="text" class="input" name="captcha" placeholder="填寫右側的驗證碼" data-validate="required:請填寫右側的驗證碼" style="width: 200px;"/>
<img src="/login/show_captcha" alt="" width="121" height="32" class="passcode" οnclick="this.src=this.src+'?'"/>
4、同控制器中login_post方法
//提交
public function login_post(){
$code=input('post.captcha');
$captcha = new \think\captcha\Captcha();
$result=$captcha->check($code);
if($result===false){
echo '驗證碼錯誤';exit;
}
echo '驗證碼正確,繼續';exit;
}
這樣就完成了thinkphp5中的驗證碼操作,有圖有真相