PHP随机重命名照片

时间:2013-05-31 16:52:31

标签: php file random upload filenames

我正在使用此代码:

<?php

$ran = rand () ;
$ran2 = $ran.".";

$allowedExts = array("gif", "jpeg", "jpg", "png");
$extension = end(explode(".", $_FILES["file"]["name"]));
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 2000000)
&& in_array($extension, $allowedExts))
  {
  if ($_FILES["file"]["error"] > 0)
    {
    echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
    }
  else
    {
    echo "Upload: " . $_FILES["file"]["name"] . "<br>";
    echo "Type: " . $_FILES["file"]["type"] . "<br>";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br>";

    if (file_exists("upload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "upload/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "filer.SITEHERE.com/upload/" . $_FILES["file"]["name"];
      }
    }
  }
else
  {
  echo "Invalid file or service down";
  echo "It must be an image to be uploaded.";
  }
?>

有什么方法可以让ran2成为文件名而不是原始名称? 对不起,我是PHP的初学者,找不到合适的东西。我想主要坚持使用这个脚本或至少使它们只能上传到一定大小的图像。

修改:删除了网站名称。

2 个答案:

答案 0 :(得分:1)

您根本没有使用$ran2。按照Ryan的例子,但添加$extension,因为看起来你已经准备好附加它了..

所以:

move_uploaded_file($_FILES["file"]["tmp_name"], "/upload/" . $ran2 . $extension);

答案 1 :(得分:0)

只需将第二个参数更改为move_uploaded_file,我也看到你没有添加扩展名,所以这也应该添加它:

// Don't forget to add the extension
$extension = pathinfo($_FILES["file"]["name"], PATHINFO_EXTENSION);
move_uploaded_file($_FILES["file"]["tmp_name"],
  "upload/" . $ran2 . $extension);