为PHP网页创建注释部分

Question

我正试图为php网页创建一个评论区域。

我跟踪这视频(我只遵循代码，因为我不知道创建者的语言)，而且代码似乎不起作用。

下面是代码的PHP位(修改)，运行时错误告诉我出了什么问题。我注释了一些给出错误的行：

<?php
        $name = $_POST["name"];
        $email = $_POST["email"];
        $url = $_POST["url"];
        $message = $_POST["message"];
        $post = $_POST["post"];

        if($post){

        $write = fopen("../database/fnaticcomments.txt", "a+");
        fwrite($write, "<b>$name<br>$email<br>$url<br></b>$message<br> ");
        fclose($write);

        $read = fopen("../database/fnaticcomments.txt", "r+t");
        echo "All comments:";

        while(!feof($read)){
        echo fread($read, 1024);
        }
        fclose($read);
        }

        else{

        // $read = fopen("../database/fnaticcomments.txt", "r+t");
        echo "All comments:";

        // while(!feof($read)){
        // echo fread($read, 1024);
        }
        fclose($read);
        }
        ?>

如果有人能帮我，我会很感激的。

*我所犯的错误是：

(1)警告:fopen(./database/fnatic注释s.txt) function.fopen:未能打开流:在第95行的/home/delpilam/public_html/firstProject/php/fnaticpage.php中拒绝权限

(2)警告: feof()期望参数1是资源，在第98行的/home/delpilam/public_html/firstProject/php/fnaticpage.php中给出布尔值

(3)警告: fread()希望参数1是资源，在第99行的/home/delpilam/public_html/firstProject/php/fnaticpage.php中给出布尔值

Answer 1

在其他情况下，如果没有添加注释，则尝试读取不存在的文件，请添加file_exists检查。

尝试如下：

<?php
        $name = $_POST["name"];
        $email = $_POST["email"];
        $url = $_POST["url"];
        $message = $_POST["message"];
        $post = $_POST["post"];

        if($post){

        $write = fopen("../database/fnaticcomments.txt", "a+");
        fwrite($write, "<b>$name<br>$email<br>$url<br></b>$message<br> ");
        fclose($write);

        $read = fopen("../database/fnaticcomments.txt", "r+t");
        echo "All comments:";

        while(!feof($read)){
        echo fread($read, 1024);
        }
        fclose($read);
        }

        else{

         if(file_exists("../database/fnaticcomments.txt")) {

          $read = fopen("../database/fnaticcomments.txt", "r+t");
          echo "All comments:";

           while(!feof($read)){
            echo fread($read, 1024);
           }
           fclose($read);

         } else {
            echo "No comments";
         }

        }
        ?>