Uploading only one file type

[LanceT]

How do I use PHP to upload only one file type and return errors for all other file type?

 

For example, I want to limit my users to only JPG, GIF, and PNG files, how do I do this?

[dgiberson]

you need to check the MIME type or $_FILES['type'] variable, create an array to hold the allowed types and then you can compare the upload against the array. there are additional checks you can perform, but this is the most basic.

 

Here is a basic tutorial i found:

http://php.about.com/od/advancedphp/ss/php_file_upload_2.htm

 

Here is a link for MIME types:

http://www.ltsw.se/knbase/internet/mime.htp

[redarrow]

somethink like this ok.

 

<?php 
$target = "upload/"; 
$target = $target . basename( $_FILES['uploaded']['name']) ; 

$_FILES['type']=array(".jpg",".png",".gif");

foreach($_FILES['type'] as $wanted_file_type){

if(!$wanted_file_type){

echo "sorry you must only use the following file type <br> .jpg <br>
.png <br> .gif <br> please try agin";
}
}
$ok=1; 
if(move_uploaded_file($_FILES['uploaded']['tmp_name'], $target)) 
{
echo "The file ". basename( $_FILES['uploadedfile']['name']). " has been uploaded";
} 
else {
echo "Sorry, there was a problem uploading your file.";
}
?>