用php写 ftp文件上传函数教程

时间：2015-01-23 来源：西部数据作者：西部数据

本篇教程是一款关于用php写 ftp文件上传函数教程,php功能很强大,可以用他自身带的函数来实例ftp的功能,实现文件上传功能,代码如下:

<?php

function phpftp_top() {

echo " ";

echo "<html> ";

echo "<head> ";

echo "<title>PHP FTP Client v1.4</title> ";

echo "</head> ";

echo "<body bgcolor="#ffffff"> ";

echo "<font face="courier"> ";

}

function phpftp_bottom() {

echo "  ";

echo "</font> ";

echo "</body> ";

echo "</html> ";

}

function phpftp_login() {

phpftp_top();

echo " ";

echo "<p> ";

echo "<form action="ftp.php3" method=post> ";

echo "Login:     ";

echo "<input name="phpftp_user" type="text"> ";

echo "<p> ";

echo "Password:  ";

echo "<input name="phpftp_passwd" type="password"> ";

echo "<p> ";

echo "Directory: ";

echo "<input name="phpftp_dir" type="text"> ";

echo "<p> ";

echo "<input type="hidden" name="function" value="dir"> ";

echo "<input type="submit" value="connect"> ";

echo "</form> ";

echo "<p> ";

phpftp_bottom();

}

/* This function does not return TRUE/FALSE - it returns the value of

$ftp, the current FTP stream. */

function phpftp_connect( $phpftp_user, $phpftp_passwd ) {

$phpftp_host="localhost";

$ftp = ftp_connect( $phpftp_host );

if ( $ftp ) {

if ( ftp_login( $ftp, $phpftp_user, $phpftp_passwd ) ) {

return $ftp;

}

}

}

function phpftp_list( $phpftp_user, $phpftp_passwd, $phpftp_dir ) {

phpftp_top();

echo " ";

$ftp = @phpftp_connect( $phpftp_user, $phpftp_passwd );

if ( ! $ftp ) {

echo "<strong>FTP login failed!</strong> ";

echo "<a href="ftp.php3">Start over?</a> ";

phpftp_bottom();

} else {

if ( ! $phpftp_dir ) {

$phpftp_dir=ftp_pwd( $ftp );

}

if ( ! @ftp_chdir( $ftp, $phpftp_dir ) ) {

echo "<font color="#ff0000"><strong>Can't enter that directory!</strong></font><p><p> ";

$phpftp_dir=ftp_pwd( $ftp );

}

echo "<strong>Current directory:</strong> " . $phpftp_dir . "

";

if ( $phpftp_dir == "/" ) {

$phpftp_dir="";

}

echo "<table border=0 cellspacing=20> ";

if ( $contents = ftp_nlist( $ftp, "." ) ) {

$d_i=0;

$f_i=0;

sort($contents);

for ( $i=0; $i < count( $contents ); $i++ ) {

$file_size = ftp_size( $ftp, $contents[$i] );

if ( $file_size == -1 ) {

$nlist_dirs[$d_i]=$contents[$i];

$d_i++;

} else {

$nlist_files[$f_i]=$contents[$i];

$nlist_filesize[$f_i]=$file_size;

$f_i++;

}

}

echo "<tr><td> ";

echo "<font face="courier"><strong>Directories</strong></font>

";

echo "<form action="ftp.php3" method=post> ";

echo "<input type="hidden" name="function" value="cd"> ";

echo "<input type="hidden" name="phpftp_user" value="" . $phpftp_user . ""> ";

echo "<input type="hidden" name="phpftp_passwd" value="" . $phpftp_passwd . ""> ";

echo "<input type="hidden" name="phpftp_dir" value="" . $phpftp_dir . ""> ";

echo "<select name="select_directory" size="10" width="100"> ";

for ( $i=0; $i < count( $nlist_dirs ); $i++ ) {

echo "<option value="" . $nlist_dirs[$i] . "">" . $nlist_dirs[$i] . "</option> ";

}

echo "</select>

";

echo "<input type="submit" value="Enter Directory"> ";

echo "</form> ";

echo "</td><td> ";

echo "<font face="courier"><strong>Files</strong></font>

";

echo "<form action="ftp.php3" method=post> ";

echo "<input type="hidden" name="function" value="get"> ";

echo "<input type="hidden" name="phpftp_user" value="" . $phpftp_user . ""> ";

echo "<input type="hidden" name="phpftp_passwd" value="" . $phpftp_passwd . ""> ";

echo "<input type="hidden" name="phpftp_dir" value="" . $phpftp_dir . ""> ";

echo "<select name="select_file" size="10"> ";

for ( $i=0; $i < count( $nlist_files ); $i++ ) {

echo "<option value="" . $nlist_files[$i] . "">" . $nlist_files[$i] ." ($nlist_filesize[$i] bytes)". "</option> ";

}

echo "</select>

";

echo "<input type="submit" value="Download File"> ";

echo "</form> ";

echo "</td></tr> ";

} else {

echo "<p><font color="#ff0000"><strong>Directory empty or not readable</strong></font><p> ";

}

echo "</table> ";

echo "<p> ";

echo "<form action="ftp.php3" method=post> ";

$cdup=dirname( $phpftp_dir );

if ( $cdup == "" ) {

$cdup="/";

}

echo "<input type="hidden" name="function" value="dir"> ";

echo "<input type="hidden" name="phpftp_user" value="" . $phpftp_user . ""> ";

echo "<input type="hidden" name="phpftp_passwd" value="" . $phpftp_passwd . ""> ";

echo "<input type="hidden" name="phpftp_dir" value="" . $cdup . ""> ";

echo "<input type="submit" value="Go up one directory"> ";

echo "</form> ";

echo "<p> ";

echo "<form enctype="multipart/form-data" action="ftp.php3" method=post> ";

echo "<input type="hidden" name="max_file_size" value="1000000"> ";

echo "<input type="hidden" name="phpftp_user" value="" . $phpftp_user . ""> ";

echo "<input type="hidden" name="phpftp_passwd" value="" . $phpftp_passwd . ""> ";

echo "<input type="hidden" name="phpftp_dir" value="" . $phpftp_dir . ""> ";

echo "<input type="hidden" name="function" value="put"> ";

echo "<input type="submit" value="Upload this:"> ";

echo "<input name="userfile" type="file"> ";

echo "</form> ";

echo "<p> ";

echo "<form action="ftp.php3" method=post> ";

echo "<input type="hidden" name="function" value="mkdir"> ";

echo "<input type="hidden" name="phpftp_user" value="" . $phpftp_user . ""> ";

echo "<input type="hidden" name="phpftp_passwd" value="" . $phpftp_passwd . ""> ";

echo "<input type="hidden" name="phpftp_dir" value="" . $phpftp_dir . ""> ";

echo "<input type="submit" value="Make subdirectory:"> ";

echo "<input name="new_dir" type="text"> ";

ftp_quit( $ftp );

phpftp_bottom();

}

}

function phpftp_cd( $phpftp_user, $phpftp_passwd, $phpftp_dir, $select_directory ) {

echo " ";

$new_directory=$phpftp_dir . "/" . $select_directory;

phpftp_list( $phpftp_user, $phpftp_passwd, $new_directory );

}

function phpftp_mkdir( $phpftp_user, $phpftp_passwd, $phpftp_dir, $new_dir ) {

echo " ";

$ftp = @phpftp_connect( $phpftp_user, $phpftp_passwd );

if ( $phpftp_dir == "" ) {

$phpftp_dir="/";

}

if ( ! $ftp ) {

@ftp_quit( $ftp );

phpftp_top();

echo "<font color="#ff0000"><strong>FTP login failed!</strong></font><p><p> ";

echo "<a href="ftp.php3">Start over?</a> ";

phpftp_bottom();

} else {

$dir_path = $phpftp_dir . "/" . $new_dir;

@ftp_mkdir( $ftp, $dir_path );

@ftp_quit( $ftp );

phpftp_list( $phpftp_user, $phpftp_passwd, $phpftp_dir );

}

};

function phpftp_get( $phpftp_user, $phpftp_passwd, $phpftp_dir, $select_file ) {

$ftp = @phpftp_connect( $phpftp_user, $phpftp_passwd );

if ( $phpftp_dir == "" ) {

$phpftp_dir="/";

}

if ( ( ! $ftp ) || ( ! @ftp_chdir( $ftp, $phpftp_dir ) ) ) {

@ftp_quit( $ftp );

phpftp_top();

echo "<font color="#ff0000"><strong>FTP login failed!</strong></font><p><p> ";

echo "<a href="ftp.php3">Start over?</a> ";

phpftp_bottom();

} else {

srand((double)microtime()*1000000);

$randval = rand();

$tmpfile="/var/tmp/xfers/" . $select_file . "." . $randval;

if ( ! ftp_get( $ftp, $tmpfile, $select_file, FTP_BINARY ) ) {

ftp_quit( $ftp );

phpftp_top();

echo "<font color="#ff0000"><strong>FTP get failed!</strong></font><p><p> <a href="ftp.php3">Start over?</a> ";

phpftp_bottom();

} else {

ftp_quit( $ftp );

header( "Content-Type: application/octet-stream" );

header( "Content-Disposition: attachment; filename=" . $select_file );

readfile( $tmpfile );

}

@unlink( $tmpfile );

}

}

function phpftp_put( $phpftp_user, $phpftp_passwd, $phpftp_dir, $userfile, $userfile_name ) {

srand((double)microtime()*1000000);

$randval = rand();

$tmpfile="/var/tmp/xfers/" . $userfile_name . "." . $randval;

if ( ! @copy( $userfile, $tmpfile ) ) {

phpftp_top();

echo "<font color="#ff0000"><strong>Upload failed! Probably no space on server for temp file.</strong></font><p><p> <a href="ftp.php3">Start over?</a> ";

phpftp_bottom();

} else {

if ( ! $ftp = @phpftp_connect( $phpftp_user, $phpftp_passwd ) ) {

unlink( $tmpfile );

phpftp_top();

echo "<font color="#ff0000"><strong>FTP login failed!</strong></font><p><p> <a href="ftp.php3">Start over?</a> ";

phpftp_bottom();

} else {

ftp_put( $ftp, $userfile_name, $tmpfile, FTP_BINARY );

ftp_quit( $ftp );

unlink( $tmpfile );

phpftp_list( $phpftp_user, $phpftp_passwd, $phpftp_dir );

}

}

}

switch( $function ) {

case "dir";

phpftp_list( $phpftp_user, $phpftp_passwd, $phpftp_dir );

break;

case "cd";

phpftp_cd( $phpftp_user, $phpftp_passwd, $phpftp_dir, $select_directory );

break;

case "get";

phpftp_get( $phpftp_user, $phpftp_passwd, $phpftp_dir, $select_file );

break;

case "put";

phpftp_put( $phpftp_user, $phpftp_passwd, $phpftp_dir, $userfile, $userfile_name ); //开源代码phpfensi.com

break;

case "mkdir";

phpftp_mkdir( $phpftp_user, $phpftp_passwd, $phpftp_dir, $new_dir );

break;

case "";

phpftp_login();

break;

}

?>