ftp_systype

(PHP 4, PHP 5, PHP 7, PHP 8)

ftp_systype返回远程 FTP 服务器的操作系统类型

说明

ftp_systype ( resource $ftp_stream ) : string

返回远程 FTP 服务器的操作系统类型。

参数

ftp_stream

FTP 连接资源。

返回值

返回远程服务器类型,发生错误则返回 false

范例

Example #1 ftp_systype() 示例

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

// 获取操作系统类型
if ($type ftp_systype($ftp)) {
    echo 
"Example.com 的操作系统为 $type\n";
} else {
    echo 
"无法获取操作系统类型";
}
?>

以上例程的输出类似于:

Example.com 的操作系统为 UNIX

User Contributed Notes

Buckwheat469 at hotmail dot com 26-Jul-2006 09:41
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);
}