How to set default name in uploaded file?

[bugzy]

My 1st try practice uploading file to the server and it was successful.

 

Now I wonder how can I set a default file name to the file that will be uploaded and overwrite the existing one.

 

I have tried experimenting on the code but I can't get it to work.

 

 

Here's my simple code..

 

edit_logo.php

 

<?php

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

<input type="hidden" name="MAX_FILE_SIZE" value="100000" />

<tr>
<td>Choose a Logo to Upload: </td>
    <td><input name="uploaded_file" type="file" /></td>
</tr>

<tr>
<td> </td>
    <td><input type="submit" value="Upload File" name="submit>"</td>
</tr>




</form>

?>

 

 

uploaded_logo.php

<?php

if($_FILES['uploaded_file']["type"] == "image/gif")
{

$target_path = "logo/";

$target_path = $target_path. basename($_FILES['uploaded_file']['name']);



if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $target_path))
{
echo "<span class=\"error_validation\">The Logo has been successfully changed!<br></span>";
echo "<span class=\"error_validation\">Upload Logo Again? <a href=\"edit_logo.php\">Click Here</a><br></span>";
}
else
{
echo "<span class=\"error_validation\">There was an error uploading the logo. Pls. try again.<br></span>";
echo "<span class=\"error_validation\">Upload Logo Again? <a href=\"edit_logo.php\">Click Here</a><br></span>";
}

}
else
{
echo "<span class=\"error_validation\">Invalid file format. We are only accepting image file. Pls. try again.<br></span>";
echo "<span class=\"error_validation\">Upload Logo Again? <a href=\"edit_logo.php\">Click Here</a><br></span>";
}


?>

 

 

So what the code suppose to do is.. If I upload an image file as the new logo it should have the default logo name "my_logo.gif", then it will overwrite the existing one...

 

Anyone?

[Jessica]

$target_path = $target_path. basename($_FILES['uploaded_file']['name']);

Change this to have the name you desire.

[bugzy]

$target_path = $target_path. basename($_FILES['uploaded_file']['name']);

Change this to have the name you desire.

 

Thank you it's working now.

 

Though how would I able to get the extension of that file? instead of typing it like the code below "Logo.gif"

 

<?php

 

$target_path = $target_path. basename('Logo.gif');

 

?>

 

 

?

[Jessica]

I would take the old name and explode on "." and choose the last value in that array.

You don't need basename anymore.

[xyph]

Here's a couple quick snippets.

 

<?php

$file = 'file.name.php';

$ext = array_pop(explode('.',$file));

echo $ext; // php

// little less memory
$ext = substr($file,strrpos($file,'.')+1);

echo $ext; // php

?>

[Drongo_III]

You can also do something like:

$ext = pathinfo($file, PATHINFO_EXTENSION);

 

Where $file is a handle for your uploaded file. Just another option

[xyph]

pathinfo works, but is quite a bit slower than using arrays, and even slower than string functions.

 

I don't think it would make a huge difference beyond the most efficiency-demanding applications though, so use whatever you find cleanest. This post is just for academic purposes.

[bugzy]

Thanks guys! Solved!

[Drongo_III]

Ahh that's good to know. I might try the array method in future

 

pathinfo works, but is quite a bit slower than using arrays, and even slower than string functions.

 

I don't think it would make a huge difference beyond the most efficiency-demanding applications though, so use whatever you find cleanest. This post is just for academic purposes.

[xyph]

I worded that badly.

 

In terms of time to execute

 

pathinfo > explode/array > substr/strings

 

So, string functions are the most efficient way to get the result. Quite accurate too, unless you're dealing with .tar.gz, etc. Whether 'tar' is actually an extension in this case is debated though.