php 多文件上传

作者: php100
时间: 2013-09-05
分类: php框架

php 多文件上传
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。

<?php
    /*
     *
     * @ 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; $i < count($_FILES[userfile][tmp_name]);$i++)
        {
            // check if there is a file in the array
            if(!is_uploaded_file($_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;
                }
            }
        }
    }
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"php">
<html xmlns="php" xml:lang="en" lang="en">
<head>
<title>Multiple File Upload</title>
</head>

<body>

<h3><?php echo $msg; ?></h3>
<p>
<?php
    if(sizeof($messages) != 0)
    {
        foreach($messages as $err)
        {
            echo $err.<br />;
        }
    }
?>
</p>
<form enctype="multipart/form-data" action="<?php echo htmlentities($_SERVER[PHP_SELF]);?>" method="post">
<input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $max_file_size; ?>" />
<?php
    $num = 0;
    while($num < $num_uploads)
    {
        echo <div><input name="userfile[]" type="file" /></div>;
        $num++;
    }
?>

</body>
</html>

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