php 多文件上传_PHP教程
用PHP上传多个文件，需要对许多可能的错误检查。此脚本允许上载有多少领域设置将在HTML表格中显示的最大允许上传文件大小。在php.ini文件中还包含一个名为ini选项中upload_max_filesize拥有2米的默认值，或2兆字节。此值也考虑到检查时的错误。
这些错误是存储在数组中的信息，并要求每个文件上传信息的基础上产生的任何错误或上载成功。的形式本身就是验证，按照在DOCTYPE W3C验证器。
/*
*
* @ Multiple File upload script.
*
* @ Can do any number of file uploads
* @ Just set the variables below and away you go
*
* @ Author: Kevin Waterson
*
* @copywrite 2008 PHPRO.ORG
*
*/
error_reporting(E_ALL);
/*** the upload directory ***/
$upload_dir= './uploads';
/*** numver of files to upload ***/
$num_uploads = 5;
/*** maximum filesize allowed in bytes ***/
$max_file_size = 51200;
/*** the maximum filesize from php.ini ***/
$ini_max = str_replace('M', '', ini_get('upload_max_filesize'));
$upload_max = $ini_max * 1024;
/*** a message for users ***/
$msg = 'Please select files for uploading';
/*** an array to hold messages ***/
$messages = array();
/*** check if a file has been submitted ***/
if(isset($_FILES['userfile']['tmp_name']))
{
/** loop through the array of files ***/
for($i=0; $i {
// check if there is a file in the array
if(!is_uploaded_file($_FILES['userfile']['tmp_name'][$i]))
{
$messages[] = 'No file uploaded';
}
/*** check if the file is less then the max php.ini size ***/
elseif($_FILES['userfile']['size'][$i] > $upload_max)
{
$messages[] = "File size exceeds $upload_max php.ini limit";
}
// check the file is less than the maximum file size
elseif($_FILES['userfile']['size'][$i] > $max_file_size)
{
$messages[] = "File size exceeds $max_file_size limit";
}
else
{
// copy the file to the specified dir
if(@copy($_FILES['userfile']['tmp_name'][$i],$upload_dir.'/'.$_FILES['userfile']['name'][$i]))
{
/*** give praise and thanks to the php gods ***/
$messages[] = $_FILES['userfile']['name'][$i].' uploaded';
}
else
{
/*** an error message ***/
$messages[] = 'Uploading '.$_FILES['userfile']['name'][$i].' Failed';
}
}
}
}
?>
br /> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
if(sizeof($messages) != 0)
{
foreach($messages as $err)
{
echo $err.'
';
}
}
?>