PHP file system stuff

Ryan M. · #1 01-12-2004, 07:53

Couple 'o php questions.

How can I tell what files/folders are in a directory?
How can I tell if a file exists without making two calls to fopen()? (assuming I then want to open it for read)

Brandon Martus · #2 01-12-2004, 09:22

Ryan M. · #3 05-12-2004, 14:46

So, I'm trying to remove a directory here...

Windows XP system running Apache 2.0.50 with PHP 4.3.9. (Yes, I know that 2.0.52 is out. Upgrade is coming soon.) I'm trying to remove a directory which is located relative to the current one at ../pages/<dir>. I'm able to delete all the files in the directory, but on trying to remove the directory itself I get a "Permission denied" error.

Here's the exact code which applies:

PHP Code:


			
...

        // Ensure the directory only contains the struct file (and the current and parent dir references)

        if(!(count(scandir("$dir/pages/$_POST[cat]")) <= 3))

        {

            header('Location: /index.php?section=admin&page=failure');

            die();

        }

        

        // Remove struct file

        if(file_exists("$dir/pages/$_POST[cat]/struct") && !unlink("$dir/pages/$_POST[cat]/struct"))

        {

            header('Location: /index.php?section=admin&page=failure');

            die();

        }

        

        // Remove the directory

        if(!rmdir("$dir/pages/$_POST[cat]"))

        {

            header('Location: /index.php?section=admin&page=failure');

            die();

        }

...

The struct file is just a file which is used by other parts of the site to maintain the directory structure. (The entire site is just a pre-alpha type thing for learning PHP and eventually some of the code will go into our team's site. The main thing is a user can login and edit content pages over the web.) The struct file does get deleted successfully; I see it disappear in my little Windows Explorer window. $dir contains a path which is brings the path back to the root of the site before going deeper in. In this case, it equals "./..". (The reason for the ./ at the beginning is how I generated it. I was too lazy to remove that part of it, as it shouldn't make a difference. Does it?)

I'm using pretty much the ship configuration which is in the php.ini-dist.recommended (or whatever that file was called) file.

Ideas? Was I unclear?

Ryan M. · #4 06-12-2004, 07:36

And maybe this is related:

Using the code below (I had something in a different file, but I wrote this stuff out just for testing. I get the same results with both things.) I get... nothing. The page just appears again without the slightest hint it did anything. Actually, on the other one, I have more error checking and it catches that the move_uploaded_file() fails and reports it appropriately.

Here's the test code:

PHP Code:


			
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>Untitled Document</title>

</head>



<body>

<?php

    if(isset($_POST['image']))

    {

        echo $_FILES['image']['tmp_name'];

        move_uploaded_file($_FILES['image']['tmp_name'], "./$_POST[name]");

        echo "<img src='./$_POST[name]' />";

        echo "<img src='./$_FILES[image][tmp_name]' />";

    }

?>



<form method="post" action="test.php" enctype="multipart/form-data">

<table>

    <tr>

        <td>File:</td>

        <td><input type="file" name="image" /><input type="hidden" name="MAX_FILE_SIZE" value="40000" /></td>

    </tr>

    <tr>

        <td>Save as:</td>

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

    </tr>

</table>

<input type="submit" value="Upload" />

</form>

</body>

</html>

--EDIT--
Acutally, after adding the enctype="multipart/form-data" to the form, I now get nothing. It just reloads.

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