Ontaining File Extension

[QRator]

Hi there all.

I am trying to upload a file to a directory using move_uploaded_file($_FILES['original_image']['tmp_name'], $filename).

What i need to do is get the filename's extension. Is there a function in PHP that can do this?

ie. if the filename is filename.jus, then I need to obtain the ".jus" and put it into a variable.

Help please 🙂

[pyro]

I don't think there is anything prebuilt in PHP to to do this, but something like this should work:

<?PHP
$file = "file.txt";
list ($filename, $ext) = explode(".",$file);
echo $ext;
?>

[QRator]

Thanks!

the other one that i got to work is:

<?PHP
   $filename = "text.tst";
   $fileEXT = substr($filename,-3);
   echo $fileEXT;
?>

[drawmack]

Originally posted by QRator
Thanks!

the other one that i got to work is:

<?PHP
   $filename = "text.tst";
   $fileEXT = substr($filename,-3);
   echo $fileEXT;
?>

[/B]

the problem with this function is non-standard extensions.

my_file.text

[pyro]

Unless they try uploading a file with a 4 letter extention... You might also want to do it like this, in case the upload a file with a period in the filename:

<?PHP 
$file = "some.file.html"; 
$sections = explode(".",$file); 
$ext = $sections[count($sections)-1];
echo $ext; 
?>

[QRator]

ah, i hate it when I dont think about stuff more... thanks guys.

[pyro]

lol... no problem... 🙂

[drawmack]

Originally posted by QRator
ah, i hate it when I dont think about stuff more... thanks guys.

just remember the basics of testing

There are three types of data

valid, invalid and borderline - you know what a function is going to do with all three types of these and you'll be fine.