Restrict File Type on Insert Record with File Upload

Is there a line of code that I can add to the code below to restrict the file types they can upload with the insert record?

<?php
// WA_UploadResult1 Params Start
$WA_UploadResult1_Params = array();
// WA_UploadResult1_1 Start
$WA_UploadResult1_Params["WA_UploadResult1_1"] = array(
'UploadFolder' => "cards",
'FileName' => $_GET["studentID"].'_'.$fname.'_'.$lname,
'DefaultFileName' => "",
'ResizeType' => "0",
'ResizeWidth' => "600",
'ResizeHeight' => "0",
'ResizeFillColor' => "" );
// WA_UploadResult1_1 End
// WA_UploadResult1 Params End
?>
<?php
WA_DFP_SetupUploadStatusStruct("WA_UploadResult1");
if(isset($_POST["submit"]) || isset($_POST["submit_x"])){
WA_DFP_UploadFiles("WA_UploadResult1", "vax_file", "2", "[NewFileName]_[Increment]", "false", $WA_UploadResult1_Params);
}
?>

No. You would have to use server validation to restrict the file type. What types did you want to allow. There is something built in for "web images only" but any file type restrictions beyond that need to be done with the separate server validation server behavior.