WordPress添加注册验证防止机器人注册

简单两种验证方式，都是从网上搬运来的。

随机数字加法运算验证:

截图:

代码: （放在你当前主题的functions函数文件里即可）

//WordPress新用户注册随机数学验证码function add_security_question_fields() {//获取两个随机数, 范围0~9$num1=rand(1,9);$num2=rand(2,9);//最终网页中的具体内容echo "<p><label for='math' class='small'>验证码：$num1 + $num2 = ? </label><input type='text' name='sum' class='input' value='' size='25'>"."<input type='hidden' name='num1' value='$num1'>"."<input type='hidden' name='num2' value='$num2'></p>";}add_action('register_form','add_security_question_fields');add_action( 'register_post', 'add_security_question_validate', 10, 3 );function add_security_question_validate( $sanitized_user_login, $user_email, $errors) {$sum=$_POST['sum'];//用户提交的计算结果switch($sum){//得到正确的计算结果则直接跳出case $_POST['num1']+$_POST['num2']:break;//未填写结果时的错误讯息case null:wp_die('错误：请输入验证码！');break;//计算错误时的错误讯息default:wp_die('错误：验证码错误,请重试！');}}add_action( 'add_security_question','register_form' );

自定义问题答案验证

截图:

代码: （放在你当前主题的functions函数文件里即可）

/*注册验证*/function rand_reg_question(){$register_number=rand(0,1); // 设置随机数的返回范围$_SESSION['register_number']=$register_number;}add_action('login_head','rand_reg_question');global $register_questions;global $register_answers;// 添加问题数组$register_questions=array('中国首都在哪里？','1+1+1等于多少？');// 添加答案数组（与上面的问题对应）$register_answers=array('北京','3');add_action( 'register_form', 'add_security_question' );function add_security_question() {global $register_questions;$register_number=$_SESSION['register_number'];?><p><label><?php echo $register_questions[$register_number];?><br /><input type="text" name="user_proof" id="user_proof" class="input" size="25" tabindex="20" /></label></p><?php }add_action( 'register_post', 'add_security_question_validate', 10, 3 );function add_security_question_validate( $sanitized_user_login, $user_email, $errors) {global $register_answers;$register_number=$_SESSION['register_number'];if (!isset($_POST[ 'user_proof' ]) || empty($_POST[ 'user_proof' ])) {return $errors->add( 'proofempty', '<strong>错误</strong>: 您还没有回答问题。' );} elseif ( strtolower( $_POST[ 'user_proof' ] ) != $register_answers[$register_number] ) {return $errors->add( 'prooffail', '<strong>错误</strong>: 您的回答不正确。' );}}