简单两种验证方式,都是从网上搬运来的。
1、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); $num2=rand(2,9); //最终网页中的具体内容 echo " <label for='math' class='small'>验证码:$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'> ";} 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' );
2、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']; ?> <label><?php echo $register_questions[$register_number];?> <input type="text" name="user_proof" id="user_proof" class="input" size="25" tabindex="20" /> </label> <?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。' ); } }