使用PHP缓冲将PHP输出保存到特定目录中的HTML

Question

I have a user HTML form on my site. On 'submit' of the form, I am using PHP buffering to save the output as an html file in my root directory.

Currently, the file generates and saves successfully, with an assigned page name it gets from one of the form fields. So far, so good.

The following code works brilliantly to achieve that:

<?php 
ob_start(); 
$headline=preg_replace('#[^_0-9a-zA-Z]#', '_', $_REQUEST['banner']);
?>
/* My 'Form Page' Content Here */
<?php 
echo ''; 
file_put_contents($headline . '.html', ob_get_contents()); 

However....

I would like to include a drop down selector in my form, with different 'sections', such as: "News", "Sports", "Weather", etc.... to choose a specific directory (folder) on my server, so the generated html file will save to an assigned directory.

I need help on the form field side of that, as well as the php buffering side to achieve this. I am not sure where to begin.

Answer 1

Add a directory dropdown:

<select name="directory">
    <option value="news">News</option>
    <option value="sports">Sports</option>
    ...
</select>

Then use this as the directory part of the filename in the script:

$dir = $_REQUEST['directory'];
$valid_directories = array('news', 'sports', 'weather', ...);
if (!in_array($dir, $valid_directories)) {
    die("Invalid directory");
}
file_put_contents("$dir/$headline.html", ob_get_contents());