Changing upload_max_filesize on PHP

a standard form will suffice for the upload just remember to include the mime in the form. then you can use $_FILES[''] to reference the file.

then you can check for the filename provided and see if it exists in the file system using file_exists() check for the file name OR if you don't need to keep the old file, you can use perofrm the file move and overwrite the old one with the new from the temporary directory

<?PHP
// this assumes that the upload form calls the form file field "myupload"
$name  = $_FILES['myupload']['name'];
$type  = $_FILES['myupload']['type'];
$size  = $_FILES['myupload']['size'];
$tmp   = $_FILES['myupload']['tmp_name'];
$error = $_FILES['myupload']['error'];
$savepath = '/yourserverpath/';
$filelocation = $svaepath.$name;
// This won't upload if there was an error or if the file exists, hence the check
if (!file_exists($filelocation) && $error == 0) {
    // echo "The file $filename exists";
    // This will overwrite even if the file exists
    move_uploaded_file($tmp, $filelocation);
}
// OR just leave out the "file_exists()" and check for the error,
// an if statement either way

?>

You might be using FAST CGI:

[webserver] <----> [fcgi daemon]
                        `- [php]

If you restart the webserver, PHP is not restarted, so still has the old ini values because it didn't reload the ini file.

Restarting the fcgi daemon solves that issue, PHP will be restarted, re-reading the ini.

Some fcgi daemons have a command that reloads the child processes more gracefully. Depends on what you use.