PHP的FTP學(xué)習(xí)（二）[轉(zhuǎn)自奧索]

更新時(shí)間：2006年10月09日 00:00:00 作者：

現(xiàn)在終于到了我們的第三個(gè)文件，include.php 它為程序建立起一個(gè)用戶界面。

"include.php" 包含三個(gè)表單，一些PHP代碼獲取當(dāng)前的目錄列表并將它們存入三個(gè)變量
$files (包括當(dāng)前目錄下的文件）,
$file_sizes (相應(yīng)的文件大小),
and $dirs (包含子目錄名)

第一個(gè)表單使用$dirs 產(chǎn)生一個(gè)下拉式目錄列表，對應(yīng)于“action=CWD”。

第二個(gè)表單使用$files $file_sizes創(chuàng)建一個(gè)可用的文件列表，每一個(gè)文件使用一個(gè)checkbox。這個(gè)表單的action對應(yīng)于"action=Delete" and "action=Download"

第三個(gè)表單用來上傳一個(gè)文件到FTP站點(diǎn)，如下：
--------------------------------------------------------------------------------
<form enctype="multipart/form-data" action=actions.php4 method=post>
...
<input type=file name=upfile>
...
</form>
--------------------------------------------------------------------------------
當(dāng)PHP以這種方式接收到一個(gè)文件名，一些變量就產(chǎn)生了，這些變量指定文件的大小，一個(gè)臨時(shí)的文件名以及文件的類型，最初的文件名存在$upfile_name，一旦上傳后文件名便存入$upfile中（這個(gè)變量是由PHP自己創(chuàng)建的）
通過這些信息，我們就可以創(chuàng)建以下的語句了：
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ftp_put($result, $upfile_name, $upfile, FTP_BINARY);
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以下是代碼列表：
--------------------------------------------------------------------------------

<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>


--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


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

<?
/*
--------------------------------------------------------------------------------
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 http://www.melonfire.com
--------------------------------------------------------------------------------
*/

// 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>


--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


<?

// 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++;
}
}

?>


<center>
You are currently working in <b><? echo $here; ?></b>
<br>

<? echo $status; ?>
</center>
<hr>
<p>

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



<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; ?>>


<input type=hidden name=action value=CWD>


<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>



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


<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>


<center>
<input type=submit name=action value=Delete>
<input type=submit name=action value=Download>
</center>
</form>
<p>

<hr>


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


<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>

<input type=file name=upfile>
</td>
</tr>
<tr>
<td>

<input type=submit name=action value=Upload>
</td>
</tr>
</table>
</form>