php 上传.doc .docx文件,无法上传doc和docx文件

在这里我试图上传pdf，doc和docx文件。 PDF文件正在上传，但doc和docx文件未上传。我在form标记中保留了enctype="multipart/form-data"属性。我的代码有什么问题。

if ((($_FILES["uploadjob"]["type"] == "application/pdf")

|| ($_FILES["uploadjob"]["type"] == "application/doc")

|| ($_FILES["uploadjob"]["type"] == "application/docx"))) {

if ($_FILES["uploadjob"]["error"] > 0) {

echo "Return Code: ".$_FILES["uploadjob"]["error"]."
";

} else {

move_uploaded_file($_FILES["uploadjob"]["tmp_name"], "jobuploads/".$_FILES["uploadjob"]["name"]);

// echo $_FILES["file"]["tmp_name"];

$filename = $_FILES["uploadjob"]["name"];

}

} else {

echo "

Invalid file. Please upload only pdf, doc or docx files.
This page will be redirected after 5 seconds, Please wait................ ";

echo "";

exit;

}