用途: HTML 图片验证码(CAPTCHA)主要用于防止自动化程序(如机器人)进行恶意操作,如垃圾邮件发送、暴力破解密码等。通过要求用户输入验证码,可以增加自动化攻击的难度,从而保护网站的安全。 工作原理: 图片验证码通常包含一串随机生成的字符或数字,这些字符或数字被绘制成一张图片,并显示在网页上。用户需要准确输入图片中...
for ($i = 0; $i < $captchaLength; $i++) { $captchaCode .= chr(rand(65, 90)); // 生成大写字母 } // 将验证码存储在会话中 $_SESSION['captcha'] = $captchaCode; // 设置图像参数 $imageWidth = 100; $imageHeight = 40; $imageColor = imagecolorallocate($image, 255, 255, 255);...
/label><inputtype="password"class="form-control"id="pwd"placeholder="Enter password"name="pswd"></div><divclass="mb-3"><labelfor="pwd"class="fw-bold">验证码:</label><divclass="row"><divclass="col-sm-10"><inputtype="text"name="maincaptcha"readonlyclass="form-control"id="mainCap...
$_SESSION['authcode'] = $captch_code; //在图片上增加点干扰元素 for ($i = 0; $i < 200; $i++) { $pointcolor = imagecolorallocate($image, rand(50, 200), rand(50, 200), rand(50, 200)); imagesetpixel($image, rand(1, 99), rand(1, 29), $pointcolor); } //在图片上增加...
code: code, mobileKey: mobileKey }; $.post('/sys/captcha/validateImageCode.do', param, function(data) { console.log('data:', data); getTicketImg(); }); }); }); /** * 获取图片验证码 */ function getTicketImg() { var ticket_key = Math.floor(Math.random() * 1000000); ...
onto your form template: name, email, file upload, radio buttons, drop-down menus, text areas, signature fields, and more. You can add required fields and CAPTCHA protection to make sure only adequate responses are accepted; even integrate payment processing without writing any additional code. ...
CAPTCHA text Send your message Testimonials [...] As I have said a few times David I am so impressed with your work and support too. Really your have made a huge difference to what I am able to do. So thank you! Stay safe & well. ...
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> scenario == 'captchaRequired'){ ?> field($model,'verifyCode')->widget(Captcha::className(),[ @@ -46,12 +46,12 @@ - parts['{input}']; ?> parts['{labelTitle}'];?> + parts['{input}']; ?> parts['{labelTitle}'];?> - 'btn btn-primary btn-block', 'name' => '...
正如我所怀疑的,在iframe中,您需要切换驱动程序的焦点以与verify按钮交互: WebDriverWait wait = new WebDriverWait(driver, 10);wait.until(ExpectedConditions.frameToBeAvailableAndSwitchToIt(By.id("CaptchaFrame")));wait.until(ExpectedConditions.elementToBeClickable(By.id("home_children_button"))).click()...