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                        /后端开发
                        
                            /PHP
                        
                        /PHP实现验证码制作

前端form.php

        <html>
                <head>
                        <meta charset = 'utf-8' />
                        <title>确认验证码</title>
                </head>
                <body>
                        <form method = "POST" action =./form.php>
                                <p>验证码图片:<img border = "1" src = "./identifyCode.php?r=<?php echo rand();?>" width ="100" height= "30" /></p>
                                <p>请输入图片上的内容:<input type = "text" name = "authcode" value = "" /> </p>
                                <p><input type = "submit" value = "提交" style = "padding:6px 20px;"></p>
                        </form>
                </body>
        </html>

前端代码显示正常,为什么加入了下面的代码,前端表单代码就显示不出来了?

<?php
   header("Content-type:text/html;charset=utf-8");
   if(isset($_REQUEST['authcode'])){
       session_start();

       if (strtolower($_REQUEST['authcode']) == $_SESSION['authcode']) {
           echo '<font color="#0000CC">输入正确</font>';
       }else{
           echo '<font color="#CC0000"><b>输入错误</b></font>';
       }
   }
   exit();
?>

下雨看世界

2016-02-27

源自：PHP实现验证码制作 1-7

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2 回答

请叫我大帅哥
2016-03-16

我的也是这样，问题解决了，谢谢哥们的指教。

0 回复有任何疑惑可以回复我~

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weibo_慕桂英6548011
2016-02-28

        <html>
                <head>
                        <meta charset = 'utf-8' />
                        <title>确认验证码</title>
                </head>
                <body>
                        <form method = "POST" action =./form.php>
                                <p>验证码图片:<img border = "1" src = "./captcha_cn4.php?r=<?php echo rand();?>" width ="100" height= "30" /></p>
                                <p>请输入图片上的内容:<input type = "text" name = "authcode" value = "" /> </p>
                                <p><input type = "submit" value = "提交" style = "padding:6px 20px;"></p>
                        </form>
                </body>
        </html>

<?php
    header("Content-type:text/html;charset=utf-8");
    if(isset($_REQUEST['authcode'])){
        session_start();

        if (strtolower($_REQUEST['authcode']) == $_SESSION['authcode']) {
            echo '<font color="#0000CC">输入正确</font>';
        }else{
            echo '<font color="#CC0000"><b>输入错误</b></font>';
        }
    }
    exit();
?>