php实现从ftp服务器上下载文件树到本地电脑的程序_php技巧
/*
用ftp_nlist()函授时,返回的数组值会有两种类型:因服务器不同而异
a:单独的文件名
b:包含目录的文件名。
如果挪用,请注意更改此处。
*/
function download_file($dir,$fc,$_FILE_)
{
$fn=ftp_nlist($fc,".");//列出该目录的文件名(含子目录),存储在数组中
$size=sizeof($fn);
$dir=($dir=="")?$dir:('/'.$dir);
$_FILE_=$_FILE_.$dir;
echo $_FILE_."
";
for($i=0;$i{
if(ereg('^[a-zA-Z0-9_]+',$fn[$i])) //提取是文件和目录,剔除.,..这两个目录
{
if(ereg('^[a-zA-Z0-9_]+([a-zA-Z0-9-]*.*)(\.+)',$fn[$i])) //是文件时直接下载
{
if(ftp_get($fc,$fn[$i],$fn[$i],FTP_BINARY))
{
echo "
下载".getcwd()."/".$fn[$i]."成功
";
}
else
{
echo "
下载".getcwd()."/".$fn[$i]."失败
";
}
}//文件下载结束
else //"是目录,进入目录,再读取文件";
{
if(!file_exists($fn[$i]))
mkdir($fn[$i], 0700);//本地机器上该目录不存在就创建一个
if(ftp_chdir($fc,$fn[$i]))
chdir($fn[$i]);
echo "当前的目录是:".getcwd()."
";// 更好的看清当前目录
download_file($fn[$i],$fc,$_FILE_);//递归进入该目录下载文件
}
}//提取文件,目录结束
}//for循环结束
ftp_cdup($fc);//ftp服务器返回上层目录
chdir(dirname($_FILE_));
}//download——file()函数结束
$_FILE_="本地机绝对地址";//例如c:/download,不要这样c:/download/
$hostname="服务器名";
$loginname="用户名";
$password="用户密码";
$fc=ftp_connect($hostname,"21") or die("Couldn't connect to $hostname");
$fc_rw=ftp_login($fc,$loginname,$password);
ftp_set_option($fc,FTP_TIMEOUT_SEC,100000);//设置超时时间
$dir="";chdir($_FILE_);//进入本地机绝对地址目录
download_file($dir,$fc,$_FILE_);
ftp_quit($fc);
//从服务器下载文件树的程序
?>
希望能给大家带去帮助,谢谢

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