Tilføj multipart/form-data enctype til din formular, når du uploader filer
<form name="upload_announcement" method="post" enctype="multipart/form-data" action="PostAnnouncement.php">
Tilføj multipart/form-data enctype til din formular, når du uploader filer
<form name="upload_announcement" method="post" enctype="multipart/form-data" action="PostAnnouncement.php">