相关疑难解决方法(0)

我刚刚制作了一个文件上传代码,我想知道为什么文件上传不起作用.我将上传目录更改为0777.这是我上传的HTML代码:

<form action="upload_file.php" method="post" enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" /> 
<br />
<input type="submit" name="submit" value="Submit" />
</form>

和PHP代码:

<?php
if ($_FILES["file"]["error"] > 0){
echo "Error Code: " . $_FILES["file"]["error"] . "<br />";
}
else
{
echo "Uploaded file: " . $_FILES["file"]["name"] . "<br />";
echo "Type: " . $_FILES["file"]["type"] . "<br />";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kilobytes<br />";

if (file_exists("/files/".$_FILES["file"]["name"]))
  {
  echo $_FILES["file"]["name"] . " already exists. No joke-- this error is …