I have enclosed two snippets of code from two files.
The file is uploaded, but gets corrupted along the way.

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echo "<FORM name=\"add\" action=\"newproductsadd.php\" method=\"post\" enctype=\"multipart/form-data\">";
echo "<TABLE width=\"93%\" class=\"contenttext\">";
echo "<TR><TD><b>Image</b></TD><TD><input type=\"file\" name=\"newimage\"></TD></TR>";
echo "<TR><TD><b>Alternative Text</b></TD><TD><input type=\"text\" name=\"newalt\"></TD></TR>";
echo "<TR><TD><b>Product Text</b></TD><TD><input type=\"text\" name=\"newtext\"></TD></TR>";
echo "<TR><TD align=\"right\"><input type=\"Submit\" name=\"Submit\" value=\"Add\"</TD>
<TD><input type=\"Reset\" name=\"Reset\" value=\"Reset\"></TD></TR>";
echo "</TABLE></FORM>";

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require "../connect.php";
echo "Uploading new image...<BR><BR>";
$url = "newproductimages/$newimage_name";
copy($newimage, "../$url");
		
$sql = "INSERT INTO newproducts (image, text, alt) VALUES ('$url','$newtext','$newalt')";
$exc = MYSQL_QUERY($sql) OR DIE ("Failed to $sql");
echo "Product added successfully.";