阅读时文本不会改变

Question

我正在尝试创建一个交互式程序，用户可以在其中使用文本文件使用文本框提出问题。有两个 php 文件。其中一个创建文本文件。另一个应该读取它并在点击时将其显示在屏幕上，因为 form action="questions.php"。但由于某种原因，文本显示但没有改变j.php 文件 1 它正在尝试创建文本文件。<?phpif(isset($_POST['submit'])) {    $question1 = $_POST['name'];    $question2 = $_POST['age'];    $file = fopen( "question.txt", "w+" ) or die( "file not open" );    $s = $question1 . "," . $question2 . "\n";    fputs($file, $s)or die("Data not written");      }else{echo'<center> <form action = "questions.php"  method = "post">  Question you want ask the person <input  type  = "text" name="name"> <<br>    Answer<input type = "text" name = "age"><br>    <input type = "submit" name = "submit" value = "Make Question">    </form>    </center>';}?>预期输出它使文件：question.txtquestions.php file2 应该读取并显示新写入的数据。<?php$myfile = file_get_contents ("question.txt");echo $myfile;?>预期输出它应该阅读新文本

Answer 1

根据更新的问题，您有 2 个文件：j.php和questions.php。

j.php负责显示表单，也负责处理表单。

questions.php负责显示表单的内容。

由于您的表单发布到questions.php，您跳过了实际处理表单。只需将表单的操作更改为：action="j.php"然后在处理后重定向到questions.php。

<?php

if(isset($_POST['submit'])) {

    $question1 = $_POST['name'];

    $question2 = $_POST['age'];

    $file = fopen( "question.txt", "w+" ) or die( "file not open" );

    $s = $question1 . "," . $question2 . "\n";

    fputs($file, $s)or die("Data not written");

    // Here - redirect to questions.php to display the contents.

    header('Location: questions.php');

    die;

}

<!-- You want to post this form to the processing file. -->

<form action="j.php" method="post">

...

或者，只需在一个文件中完成所有操作。

<?php

if (isset($_POST['submit'])) {

    $question1 = $_POST['name'];

    $question2 = $_POST['age'];

    $file = fopen("question.txt", "w+") or die("file not open");

    $s = $question1 . "," . $question2 . "\n";

    fputs($file, $s) or die("Data not written");

    header('Location: '.$_SERVER['PHP_SELF']);

    die;

}

?>

<h1>File Writer</h1>

<form method="post">

    <label>

        Question:

        <input type="text" name="name">

    </label><br>

    <label>Answer:

        <input type="text" name="age">

    </label><br>

    <input type="submit" name="submit" value="Make Question">

</form>

<hr>

The contents of the file are:

<!-- Suppressing a warning here with @. You shouldn't do this. -->

<?php echo @file_get_contents ("question.txt"); ?>