php - 移动上传的文件 - 没有权限

Question

上传文件时，我不断收到权限错误。

警告：move_uploaded_file（/var/www/localhost/htdocs/trade-show/documents/hero_front.jpg）[function.move-uploaded-file]：无法打开流：/var/www/localhost/htdocs/ 中的权限被拒绝trade-show/selectItems.php 在第 30 行

这是我的代码。让它工作的唯一方法是使目录权限为 777。我试过 chmod 0755 没有运气。想法？

if ($_FILES['fileUpload']['error'] == 0) {
    $upload = "/var/www/localhost/htdocs/trade-show/documents/".basename($_FILES['fileUpload']['name']);

    if (!move_uploaded_file($_FILES['fileUpload']['tmp_name'],$upload)) {
        echo "<h1>Error uploading file ".$_FILES['fileUpload']['name']."</h1>$upload<br />\n";
    } else {
        move_uploaded_file($_FILES['fileUpload']['tmp_name'],$upload);
    }
}