为什么我的其他人不工作？

if(is_uploaded_file($_FILES['file']['tmp_name']))
{
move_uploaded_file($_FILES['file']['tmp_name'],$uploaddir.'/'.$_FILES['file']['name']);
}
print "Your file was successfully uploaded!";
} else { (This is my error.)
print "Incorrect file extension!";
}

Why doesn't the else work? I can't seem to figure it out by myself, so I decided to ask someone who has more knowledge of php than I do.

You have a closing brace to many:

if(is_uploaded_file($_FILES['file']['tmp_name']))
{
  move_uploaded_file($_FILES['file']['tmp_name'],$uploaddir.'/'.$_FILES['file']['name']);
    print "Your file was successfully uploaded!";
} 
else 
{ 
  print "Incorrect file extension!";
}

That is because

• Your print statement was inbetween of if and else statements.
• You had an extra brace.

Here's the fixed code.

<?php
if(is_uploaded_file($_FILES['file']['tmp_name']))
{
    move_uploaded_file($_FILES['file']['tmp_name'],$uploaddir.'/'.$_FILES['file']['name']);
    print "Your file was successfully uploaded!";
}
else
{
print "Incorrect file extension!";
}