PHP Move_Uploaded_Files重命名文件

Question

I'm trying to upload files through a jquery image uploader, but I'd like all files to use the variable 'fileName' to name the file that gets uploaded. As it works currently the file is uploaded using its original name. Any suggestions?

<?php

// A list of permitted file extensions
$allowed = array('png', 'jpg', 'gif');
$fileName = 'productimage';

if(isset($_FILES['upl']) && $_FILES['upl']['error'] == 0){

    $extension = pathinfo($_FILES['upl']['name'], PATHINFO_EXTENSION);

    if(!in_array(strtolower($extension), $allowed)){
        echo '{"status":"error"}';
        exit;
    }

    if(move_uploaded_file($_FILES['upl']['tmp_name'], 'uploads/'.$_FILES['upl']['name'])){
        echo '{"status":"success"}';
        exit;
    }
}

echo '{"status":"error"}';
exit;

Answer 1

Simply change

if(move_uploaded_file($_FILES['upl']['tmp_name'], 'uploads/'.$_FILES['upl']['name'])){

to

if(move_uploaded_file($_FILES['upl']['tmp_name'], 'uploads/'.$fileName)){