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用PHP实现文件上传二法,转自奥索

后天总算到了我们的第四个文本,include.php 它为顺序构建起三个用户分界面。

By Vikram Vaswani
Melonfire
November 07, 2000

一、利用php的文书函数来促成上传
这段代码分为四个文本,四个为upload.html,三个是upload.php。

<!-- code for actions.php ends here -->


<!-- code for include.php begins here -->

<?

// get current location
$here = ftp_pwd($result);

/*
since ftp_size() is quite slow, especially when working
on an array containing all the files in a directory,
this section performs an ftp_size() on all the files in the current
directory and creates three arrays.
*/

// array for files
$files = Array();

// array for directories
$dirs = Array();

// array for file sizes
$file_sizes = Array();

// counters
$file_list_counter = 0;
$dir_list_counter = 0;

// check each element of $filelist
for ($x=0; $x<sizeof($filelist); $x )
{
if (ftp_size($result, $filelist[$x]) != -1)
{
// create arrays
$files[$file_list_counter] = $filelist[$x];
$file_sizes[$file_list_counter] = ftp_size($result, $filelist[$x]);
$file_list_counter ;
}
else
{
$dir_list[$dir_list_counter] = $filelist[$x];
$dir_list_counter ;
}
}

?>

<!-- header - where am I? -->
<center>
You are currently working in <b><? echo $here; ?></b>
<br>
<!-- status message for upload function -->
<? echo $status; ?>
</center>
<hr>
<p>
<!-- directory listing in drop-down list -->
Available directories:
<form action=actions.php method=post>

<!-- these values are passed hidden every time -->
<!-- a more optimal solution might be to place these in session
variables -->
<input type=hidden name=username value=<? echo $username; ?>>
<input type=hidden name=password value=<? echo $password; ?>>
<input type=hidden name=server value=<? echo $server; ?>>
<input type=hidden name=cdir value=<? echo $here; ?>>

<!-- action to take when THIS form is submitted -->
<input type=hidden name=action value=CWD>

<!-- dir listing begins; first item is for parent dir -->
<select name=rdir>
<option value=".."><parent directory></option>

<?

for ($x=0; $x<sizeof($dir_list); $x )
{
echo "<option value=" . $dir_list[$x] . ">" . $dir_list[$x] . "</option>";

}
?>

</select>
<input type=submit value=Go>
</form>

<hr>

<!-- file listing begins -->

Available files:
<form action=actions.php method=post>

<!-- these values are passed hidden every time -->
<input type=hidden name=server value=<? echo $server; ?>>
<input type=hidden name=username value=<? echo $username; ?>>
<input type=hidden name=password value=<? echo $password; ?>>
<input type=hidden name=cdir value=<? echo $here; ?>>

<table border=0 width=100%>

<?

// display file listing with checkboxes and sizes
for ($y=0; $y<sizeof($files); $y )
{
echo "<tr><td><input type=checkbox name=dfile[] value=" . $files[$y] .
">". $files[$y] . " <i>(" . $file_sizes[$y] . " bytes)</i><td>";
}

?>
</table>

<!-- actions for this form -->
<center>
<input type=submit name=action value=Delete>
<input type=submit name=action value=Download>
</center>
</form>
<p>

<hr>

<!-- file upload form -->
File upload:
<form enctype="multipart/form-data" action=actions.php method=post>

<!-- these values are passed hidden every time -->
<input type=hidden name=username value=<? echo $username; ?>>
<input type=hidden name=password value=<? echo $password; ?>>
<input type=hidden name=server value=<? echo $server; ?>>
<input type=hidden name=cdir value=<? echo $here; ?>>

<table>
<tr>
<td>
<!-- file selection box -->
<input type=file name=upfile>
</td>
</tr>
<tr>
<td>
<!-- action for this form -->
<input type=submit name=action value=Upload>
</td>
</tr>
</table>
</form>

<!-- code for include.php ends here -->

  

*/

// function to connect to FTP server
function connect()
{
global $server, $username, $password;
$conn = ftp_connect($server);
ftp_login($conn, $username, $password);
return $conn;
}

// main program begins

// check for valid form entries else print error
if (!$server || !$username || !$password)
{
echo "Form data incomplete!";
}
else
{

// connect
$result = connect();

// action: change directory
if ($action == "CWD")
{

// at initial stage $rdir does not exist
// so assume default directory
if (!$rdir)
{
$path = ".";
}
// get current location $cdir and add it to requested directory $rdir
else
{
$path = $cdir . "/" . $rdir;
}

// change to requested directory
ftp_chdir($result, $path);

}

// action: delete file(s)
else if ($action == "Delete")
{

ftp_chdir($result, $cdir);

// loop through selected files and delete
for ($x=0; $x<sizeof($dfile); $x )
{
ftp_delete($result, $cdir . "/" . $dfile[$x]);
}

}
// action: download files
else if ($action == "Download")
{

ftp_chdir($result, $cdir);

// download selected files
// IMPORTANT: you should specify a different download location here!!
for ($x=0; $x<sizeof($dfile); $x )
{
ftp_get($result, $dfile[$x], $dfile[$x], FTP_BINARY);
}

}
// action: upload file
else if ($action == "Upload")
{

ftp_chdir($result, $cdir);

// put file

/*
a better idea would be to use
$res_code = ftp_put($result, $HTTP_POST_FILES["upfile"]["name"],
$HTTP_POST_FILES["upfile"]["tmp_name"], FTP_BINARY);
as it offers greater security
*/
$res_code = ftp_put($result, $upfile_name, $upfile, FTP_BINARY);

// check status and display
if ($res_code == 1)
{
$status = "Upload successful!";
}
else
{
$status = "Upload error!";
}

}

// create file list
$filelist = ftp_nlist($result, ".");

// and display interface
include("include.php");

// close connection
ftp_quit($result);

}
?>

</body>
</html>

//建立ftp联接

其次个表单使用$files  $file_sizes创设三个可用的公文列表,每三个文本使用三个checkbox。那个表单的action对应于"action=Delete" and "action=Download"

<!-- code for actions.php ends here -->


<!-- code for include.php begins here -->

<?

// get current location
$here = ftp_pwd($result);

/*
since ftp_size() is quite slow, especially when working
on an array containing all the files in a directory,
this section performs an ftp_size() on all the files in the current
directory and creates three arrays.
*/

// array for files
$files = Array();

// array for directories
$dirs = Array();

// array for file sizes
$file_sizes = Array();

// counters
$file_list_counter = 0;
$dir_list_counter = 0;

// check each element of $filelist
for ($x=0; $x<sizeof($filelist); $x )
{
if (ftp_size($result, $filelist[$x]) != -1)
{
// create arrays
$files[$file_list_counter] = $filelist[$x];
$file_sizes[$file_list_counter] = ftp_size($result, $filelist[$x]);
$file_list_counter ;
}
else
{
$dir_list[$dir_list_counter] = $filelist[$x];
$dir_list_counter ;
}
}

?>

<!-- header - where am I? -->
<center>
You are currently working in <b><? echo $here; ?></b>
<br>
<!-- status message for upload function -->
<? echo $status; ?>
</center>
<hr>
<p>
<!-- directory listing in drop-down list -->
Available directories:
<form action=actions.php method=post>

<!-- these values are passed hidden every time -->
<!-- a more optimal solution might be to place these in session
variables -->
<input type=hidden name=username value=<? echo $username; ?>>
<input type=hidden name=password value=<? echo $password; ?>>
<input type=hidden name=server value=<? echo $server; ?>>
<input type=hidden name=cdir value=<? echo $here; ?>>

<!-- action to take when THIS form is submitted -->
<input type=hidden name=action value=CWD>

<!-- dir listing begins; first item is for parent dir -->
<select name=rdir>
<option value=".."><parent directory></option>

<?

for ($x=0; $x<sizeof($dir_list); $x )
{
echo "<option value=" . $dir_list[$x] . ">" . $dir_list[$x] . "</option>";

}
?>

</select>
<input type=submit value=Go>
</form>

<hr>

<!-- file listing begins -->

Available files:
<form action=actions.php method=post>

<!-- these values are passed hidden every time -->
<input type=hidden name=server value=<? echo $server; ?>>
<input type=hidden name=username value=<? echo $username; ?>>
<input type=hidden name=password value=<? echo $password; ?>>
<input type=hidden name=cdir value=<? echo $here; ?>>

<table border=0 width=100%>

<?

// display file listing with checkboxes and sizes
for ($y=0; $y<sizeof($files); $y )
{
echo "<tr><td><input type=checkbox name=dfile[] value=" . $files[$y] .
">". $files[$y] . " <i>(" . $file_sizes[$y] . " bytes)</i><td>";
}

?>
</table>

<!-- actions for this form -->
<center>
<input type=submit name=action value=Delete>   
<input type=submit name=action value=Download>
</center>
</form>
<p>

<hr>

<!-- file upload form -->
File upload:
<form enctype="multipart/form-data" action=actions.php method=post>

<!-- these values are passed hidden every time -->
<input type=hidden name=username value=<? echo $username; ?>>
<input type=hidden name=password value=<? echo $password; ?>>
<input type=hidden name=server value=<? echo $server; ?>>
<input type=hidden name=cdir value=<? echo $here; ?>>

<table>
<tr>
<td>
<!-- file selection box -->
<input type=file name=upfile>
</td>
</tr>
<tr>
<td>
<!-- action for this form -->
<input type=submit name=action value=Upload>
</td>
</tr>
</table>
</form>

<!-- code for include.php ends here -->

*** 说明 ***

其多个表单用来上传贰个文书到FTP站点,如下:

<form enctype="multipart/form-data" action=actions.php4 method=post>
...
<input type=file name=upfile>
...

以下是代码列表:

<!-- code for index.html begins here -->
<html>
<head>
<basefont face=arial>
</head>

<body>

<table border=0 align=center>
<form action="actions.php" method=post>
<input type=hidden name=action value=CWD>
<tr>
<td>
Server
</td>
<td>
<input type=text name=server>
</td>
</tr>

<tr>
<td>
User
</td>
<td>
<input type=text name=username>
</td>
</tr>

<tr>
<td>
Password
</td>
<td>
<input type=password name=password>
</td>
</tr>

<tr>
<td colspan=2 align=center>
<input type="submit" value="Beam Me Up, Scotty!">
</td>
</tr>

</form>
</table>

</body>
</html>

?>

经过那几个消息,我们就足以成立以下的语句了:

<!-- code for index.html ends here -->


<!-- code for actions.php begins here -->

<html>
<head>
<basefont face=Arial>
</head>
<body>

<?

<table>

</form>

当PHP以这种措施接受到三个文本名,一些变量就生出了,这一个变量钦命文件的大大小小,一个一时的文件名以及文件的种类,最初的文书名存在$upfile_name,一旦上传后文件名便存入$upfile中(那一个变量是由PHP本身创办的)

/*

DISCLAIMER:

This is use-at-your-own-risk code.

It is meant only for illustrative purposes and is not meant for production environments. No warranties of any kind are provided to the user.

You have been warned!

All code copyright Melonfire, 2000. Visit us at

<html>

以下是代码列表:

<!-- code for index.html begins here -->
<html>
<head>
<basefont face=arial>
</head>

<body>

<table border=0 align=center>
<form action="actions.php" method=post>
<input type=hidden name=action value=CWD>
<tr>
<td>
Server
</td>
<td>
<input type=text name=server>
</td>
</tr>

<tr>
<td>
User
</td>
<td>
<input type=text name=username>
</td>
</tr>

<tr>
<td>
Password
</td>
<td>
<input type=password name=password>
</td>
</tr>

<tr>
<td colspan=2 align=center>
<input type="submit" value="Beam Me Up, Scotty!">
</td>
</tr>

</form>
</table>

</body>
</html>

</td>

ftp_put($result, $upfile_name, $upfile, FTP_BINARY);

$userfile_size:按字节计算的上载文件的轻重。

率先个表单使用$dirs 产生一个下拉式目录列表,对应于“action=CWD”。

PHP(Hypertext Preprocessor)是一种 HTML 内嵌式的语言 (类似 IIS上的ASP)。而 PHP 独特的语法混合了 C、Java、Perl 以及 PHP 式的新语法。它能够比 CGI 可能 Perl更迅速的试行动态网页。除外,用 PHP 写出来的 Web 后端CGI 程序,能够很随便的移植到区别的类别平台上。

<!-- code for index.html ends here -->


<!-- code for actions.php begins here -->

<html>
<head>
<basefont face=Arial>
</head>
<body>

<?

<input type=hidden name=server value=<? Echo $server; ?>>

"include.php" 富含三个表单,一些PHP代码获取当前的目录列表并将它们存入七个变量
$files (满含当前目录下的文件),
$file_sizes (相应的文件大小),
and $dirs (包涵子目录名)

?>

/*

DISCLAIMER:

This is use-at-your-own-risk code.

It is meant only for illustrative purposes and is not meant for production environments. No warranties of any kind are provided to the user.

You have been warned!

All code copyright Melonfire, 2000. Visit us at

</html>

*/

// function to connect to FTP server
function connect()
{
global $server, $username, $password;
$conn = ftp_connect($server);
ftp_login($conn, $username, $password);
return $conn;
}

// main program begins

// check for valid form entries else print error
if (!$server
!$username
!$password)
{
echo "Form data incomplete!";
}
else
{

// connect
$result = connect();

// action: change directory
if ($action == "CWD")
{

// at initial stage $rdir does not exist
// so assume default directory
if (!$rdir)
{
$path = ".";
}
// get current location $cdir and add it to requested directory $rdir
else
{
$path = $cdir . "/" . $rdir;
}

// change to requested directory
ftp_chdir($result, $path);

}

// action: delete file(s)
else if ($action == "Delete")
{

ftp_chdir($result, $cdir);

// loop through selected files and delete
for ($x=0; $x<sizeof($dfile); $x )
{
ftp_delete($result, $cdir . "/" . $dfile[$x]);
}

}
// action: download files
else if ($action == "Download")
{

ftp_chdir($result, $cdir);

// download selected files
// IMPORTANT: you should specify a different download location here!!
for ($x=0; $x<sizeof($dfile); $x )
{
ftp_get($result, $dfile[$x], $dfile[$x], FTP_BINARY);
}

}
// action: upload file
else if ($action == "Upload")
{

ftp_chdir($result, $cdir);

// put file

/*
a better idea would be to use
$res_code = ftp_put($result, $HTTP_POST_FILES["upfile"]["name"],
$HTTP_POST_FILES["upfile"]["tmp_name"], FTP_BINARY);
as it offers greater security
*/
$res_code = ftp_put($result, $upfile_name, $upfile, FTP_BINARY);

// check status and display
if ($res_code == 1)
{
$status = "Upload successful!";
}
else
{
$status = "Upload error!";
}

}

// create file list
$filelist = ftp_nlist($result, ".");

// and display interface
include("include.php");

// close connection
ftp_quit($result);

}
?>

</body>
</html>

//ftp联接主机函数

}

上传文件采用:upload.html 代码如下:

<input type=hidden name=cdir value=<? Echo $cdir; ?>>

echo "上传成功!";

</form>

//以上设置你的FTP主机名、用户名和用户密码

ftp_login($conn, $username, $password);

}

<body>

ftp_quit($result);

$userfile:在将在寄放上载文件的服务器上的不常文件名字。

其Value(值)能够限制上载文件的分寸。

</tr>

<form enctype="multipart/form-data" action="upload.php" method="post">

<!-- 提交表单-->

2、在upload.html中定义了二个变量userfile,在upload.php中,我们就足以接纳那么些变量,直接通过$userfile访问上载的文书,但由于这是二个保存文件的变量,由此文件名字务必经过别的一个$userfile_name变量取得。

管理上传文件:ftp.php 代码如下:

1、使用了PHP文件函数copy()将上载到临时目录下的文件拷贝到二个特定的目录下,并重新命名称为"newfile"。

echo "上传错误!";

*** 说明 ***

<?php

</head>

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