PHP 用变量名创建路径和文件夹

Question

在 PHP 中，我试图为不同的人注册和添加文件创建一个新的数据库类型文件夹。我可以轻松创建文件并写入文件，但由于某种原因，每次我尝试让 PHP 使用用户名变量作为路径创建文件夹时，它所做的只是创建一个名为 $username 的文件夹。

这是我的代码，精简为该部分的基础知识。

<?php
$title = $_POST["title"];
$myFile = "/users/$username/title.txt";
$fh = fopen($myFile, 'w') or die("There was an error in changing your title.  <br />");
$stringData = "$title\n";
fwrite($fh, $stringData);
fclose($fh);

$template = $_POST["temp"];
$myFile = "$structure/template.txt";
$fh = fopen($myFile, 'w') or die("There was an error in changing your template.  <br />");
$stringData = "$template\n";
fwrite($fh, $stringData);
fclose($fh);
?>

Answer 1

试试这个

<?php
$title = $_POST["title"];
$myFile = "/users/".$username."/title.txt";
$fh = fopen($myFile, 'w') or die("There was an error in changing your title.  <br />");
$stringData = $title."\n";
fwrite($fh, $stringData);
fclose($fh);

$template = $_POST["temp"];
$myFile = $structure."/template.txt";
$fh = fopen($myFile, 'w') or die("There was an error in changing your template.  <br />");
$stringData = $template."\n";
fwrite($fh, $stringData);
fclose($fh);
?>

Answer 2

为了使其工作，您确实需要从字符串中分离出变量（如 Ben Griffiths 提到的）并检查它不为空。另外，请确保首先使用 mkdir() 创建目录（aschuler 也提到过这一点）。因此，代码可能看起来像这样，但如果不知道 $username、$struct、$title 和 $template 来自哪里，您可能需要对此进行一些更改：

<?php
$title = $_POST['title'];
if (trim($username) == '') {
    die("No username passed in!");
} else {
    $userdir = "/users".$username."/";
    mkdir($userdir);
    $fh = fopen($userdir."title.txt", 'w') or die("There was an error in changing your title.  <br />");

    $stringData = $title."\n";
    fwrite($fh, $stringData);
    fclose($fh);
}

$template = $_POST['temp'];
if (trim($template) == '') {
    die("No template passed in!");
} else {
    $structdir = $structure."/";
    mkdir($structdir);
    $fh = fopen($structdir."template.txt", 'w') or die("There was an error in changing your template.  <br />");

    $stringData = $template."\n";
    fwrite($fh, $stringData);
    fclose($fh);
}

?>

希望这会有所帮助。

Answer 3

你是说这个 /users/$username/title.txt 创建了完全 /users/$username/title.txt

所以你的问题是你需要捕获 $username首先，我不知道你的代码是什么样子，但也许是这样？

<?php $username=$_SESSION['username']; //retrieve the username 
    //rest of your code 
    $myFile = "/users/$username/title.txt";
$fh = fopen($myFile, 'w') or die("There was an error in changing your title.  <br />");
$stringData = "$title\n";
fwrite($fh, $stringData);
fclose($fh);

$template = $_POST["temp"];
$myFile = "$structure/template.txt";
$fh = fopen($myFile, 'w') or die("There was an error in changing your template.  <br />");
$stringData = "$template\n";
fwrite($fh, $stringData);
fclose($fh);
?>