PHP Upload form, PDF, Doc & Docx

PHP Upload form, PDF, Doc & Docx

I'm struggling to make this upload code work for a docx file, it works
okay for doc and pdf..
$allowedExts = array("pdf", "doc", "docx");
$extension = end(explode(".", $_FILES["file"]["name"]));
if ((($_FILES["file"]["type"] == "application/pdf")
|| ($_FILES["file"]["type"] == "application/msword"))
&& ($_FILES["file"]["size"] < 20000000)
&& in_array($extension, $allowedExts))
{
if ($_FILES["file"]["error"] > 0)
{
echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
}
this is part of a project from a while ago and i honestly can't remember
how to do it..
I know it's not the most secure upload method, but if someone could help
it would be appreciated!
I'm thinking i need to add another line here:
if ((($_FILES["file"]["type"] == "application/pdf")
|| ($_FILES["file"]["type"] == "application/msword"))
&& ($_FILES["file"]["size"] < 20000000)
Just not sure what.. Help is appreciated!