PHP File Uploader leading to "Page not Found" - php

Question

I've put together an HTML Form for a PHP File Uploader but when I use the form and attempt to upload the file I get sent to a "Page not Found" and the file never ends up where it's supposed to on my server.
Here's the Form:
<form action="upload_file.php" method="post" enctype="multipart/form-data">
<p><font size="2">*=Required</font></p>
<b>Mod Name:*</b><br /><input type="text" name="modname" size="30"><br />
<b>Author:*</b><br /><input type="text" name="author" size="30"><br />
<b>Version:*</b><br /><input type="text" name="version" size="30"><br /><br />
<b>Game:</b><select>
<option value="morrowind">Morrowind</option>
<option value="oblivion">Oblivion</option>
<option value="skyrim">Skyrim</option>
</select><br /><br />
<p><b><font size="3">Dependencies:</font></b></p>
<p>Morrowind</p>
<input type="checkbox" value="expansion" name="tribunal" />Tribunal <br />
<input type="checkbox" value="expansion" name="bloodmoon" />Bloodmoon <br />
<input type="checkbox" value="mod" name="mge" />MGE <br />
<input type="checkbox" value="mod" name="mwe" />MWE <br />
<input type="checkbox" value="mod" name="mwse" />MWSE <br />
<p>Oblivion</p>
<input type="checkbox" value="expansion" name="knights" />Knights of the Nine <br />
<input type="checkbox" value="expansion" name="isle" />Shivering Isles <br />
<p>Skyrim</p>
<input type="checkbox" value="expansion" name="dawnguard" />Dawnguard <br /><br />
<label for="description"><b>Description:</b></label><br />
<textarea id="description" rows="4" cols="50"></textarea><br /><br />
<b>Uploader Name:</b><br /><input type="text" name="upname" size="30"><br /><br />
<label><b>Uploader Comments</b></label><br />
<textarea id="uploader" rows="4" cols="50"></textarea><br /><br />
<b>Mirror Links:</b><br /><input type="text" name="mirror" size="50"><br /><br />
<label for="file"><b>Upload Mod:</b></label>
<input type="file" name="file" id="file" />
<br />
<input type="submit" name="submit" value="Submit" />
<p><font size="2">Maximum File Size: 400MB; Only Compressed Files Accepted (.zip, .rar, .7z)</font></p>
</form>
and here's the upload php file:
<?php
$allowedExts = array("zip, rar, 7z");
$extension = end(explode(".", $_FILES["file"]["name"]));
if ((($_FILES["file"]["type"] == "application/zip")
|| ($_FILES["file"]["type"] == "application/x-rar-compressed")
|| ($_FILES["file"]["type"] == "application/x-7z-compressed"))
&& ($_FILES["file"]["size"] < 419430401)
&& in_array($extension, $allowedExts))
{
if ($_FILES["file"]["error"] > 0)
{
echo "Error: " . $_FILES["file"]["error"] . "<br />";
}
else
{
echo "Upload: " . $_FILES["file"]["name"] . "<br />";
echo "Type: " . $_FILES["file"]["type"] . "<br />";
echo "Size: " . ($_FILES["file"]["size"] / 400) . " Mb<br />";
echo "Stored in: " . $_FILES["file"]["tmp_name"];
if (file_exists("uploads/mods/" . $_FILES["file"]["name"]))
{
echo $_FILES["file"]["name"] . " already exists. ";
}
else
{
move_uploaded_file($_FILES["file"]["tmp_name"],
"uploads/mods/" . $_FILES["file"]["name"]);
echo "Stored in: " . "uploads/mods/" . $_FILES["file"]["name"];
}
}
}
else
{
echo "Invalid file";
}
?>
Where did I mess up?
Do I need to place the .php file inside of the upload directory? Where does the form information go? Also, how do I require some of the text boxes in the form?
Thanks, I'm a bit lost here.

Answer 1

You can check the web server logs (like suggested before) to see if they give you an idea (usually they do). Without knowing your file/directory structure, it's pretty much guesswork. I noticed the form references upload_file.php, then you call the second code upload php. Is it just misnamed?
Also, make sure it is in the same directory as the HTML file with your form.
If you want the upload_file.php file to be in a subdirectory, you can do this by changing:
<form action="upload_file.php" method="post" enctype="multipart/form-data">
to:
<form action="subdirectory/upload_file.php" method="post" enctype="multipart/form-data">