图像上传并保存在数据库中

Question

我的主要目标是将每个上传的图像保存在文件夹中以具有唯一的名称。我这样做了，但无论它有什么 uniqe 名称，在 DB 中它仍然有旧的原始名称，我如何在 DB 中保存相同的 uniqe 名称？ 我的代码是：

<?php
     if(isset($_SESSION['username'])){ 
    if(isset($_POST['upload'])) {

$allowed_filetypes = array('.jpg','.jpeg','.png','.gif');
$max_size = "100000"; /// 1 Мегабайт
$max_height = "90000"; /// 300 Килобайта
$max_width = "90000"; /// 300 Килобайта
$upload_path = 'gallery/';
$random = md5(time());
$filename = $_FILES['userfile']['name'];
$ext = substr($filename, strpos($filename,'.'), strlen($filename)-1);

if(!in_array($ext,$allowed_filetypes))
  die('The file you attempted to upload is not allowed.');

if(filesize($_FILES['userfile']['tmp_name']) > $max_size)
  die('Прекалено е тежка снимката.');

if(filesize($_FILES['userfile']['tmp_name']) > $max_height)
  die('Прекалено е голяма снимка във височина.');

if(filesize($_FILES['userfile']['tmp_name']) > $max_width)
  die('Прекалено е голяма снимка във височина.');
if(!is_writable($upload_path))
  die('You cannot upload to the specified directory, please CHMOD it to 777.');

if(move_uploaded_file($_FILES['userfile']['tmp_name'],$upload_path .$random . $filename)) {
$q = mysqli_query($connection,"UPDATE users SET avatar='".$_FILES['userfile']['name']."' WHERE username ='".$_SESSION['username']."'");

echo "<font color='#5cb85c'>Браво, успешно си качил/а профилна снимка!</font>"; 


} else {
     echo 'There was an error during the file upload.  Please try again.';
}
}


       echo ' <form action="images.php" method="post" enctype="multipart/form-data"> ';  
       echo ' <input type="file" name="userfile"/>';
       echo ' <input type="submit" name="upload"  value="Качи">';
       echo ' </form>';


 }
 else
 {
echo "<font color='#ec3f8c'>Съжелявам! За да  качиш снимка във профила си, <a href='login.php'><font color='#ec3f8c'><b> трябва да се логнеш</b> </font></a></font>"; 
 }

    ?>

谁能解释一下，我还应该补充什么？

Answer 1

如果我理解问题所在，图像会以正确的唯一名称保存在文件系统中。就是$upload_path .$random . $filename，但是数据库中的引用是错误的。

只需替换查询

UPDATE users SET avatar='".$_FILES['userfile']['name'].

与

UPDATE users SET avatar='".$upload_path .$random . $filename

HTH, 马塞洛