FTP 函数
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ftp_systype

(PHP 4, PHP 5)

ftp_systype返回远程 FTP 服务器的操作系统类型

说明

string ftp_systype ( resource $ftp_stream )

返回远程服务器的系统类型,发生错误则返回 FALSE

参数

ftp_stream

FTP 连接资源。

返回值

返回远程服务器类型,失败返回 FALSE

范例

Example #1 ftp_systype() 例子

<?php
// ftp connection
$ftp ftp_connect('ftp.example.com');
ftp_login($ftp'user''password');

// get the system type
if ($type ftp_systype($ftp)) {
    echo 
"Example.com is powered by $type\n";
} else {
    echo 
"Couldn't get the systype";
}
?>

以上例程的输出类似于:

Example.com is powerd by UNIX


FTP 函数
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用户评论:

jgbreezer at NOSPAM dot gmail dot com (2008-04-07 04:21:14)

ftp_systype does NOT appear to be a reliable way to detect whether it is connected, as at least for a local network connection I have here to a Windows ftp server, it can succeed without a working connection (is it cached?). Don't know if this is specific to our ftp server - perhaps it doesn't behave well when it times out links.

Buckwheat469 at hotmail dot com (2006-07-26 09:41:47)

ftp_systype can be a good way of checking the state of a connection, since PHP doesn't have a better system to check the state of an ftp connection (is_connected would be nice).
if (!($type = ftp_systype($conn_id))) {
echo "FTP connection has failed! Trying again.\n";
$conn_id = ftp_connect($ftp_server);
$login_result = ftp_login($conn_id, $ftp_user, $ftp_pass);
}

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