On server with multiple network card, is there a way to choose the interface to use ?
(PHP 4, PHP 5, PHP 7, PHP 8)
ftp_connect — 建立一个新的 FTP 连接
$host
, int $port
= 21
, int $timeout
= 90
) : resource
ftp_connect() 将会建立一个 FTP 连接到指定的服务器 host
。
host
要连接的服务器地址。此参数后面不应以斜线结尾,前面也不需要用 ftp://
开头。
port
为要连接到的 FTP 器的端口号,如果没有设置或者为 0,则会使用默认的端口 21 来连接。
timeout
用来设置网络传输的超时时间限制。如果此选项留空,则默认的值为 90 秒。超时时间可以在任何时候通过函数 ftp_set_option() 及 ftp_get_option() 来改变和获取。
如果成功返回一个 FTP 连接资源句柄,发生错误则返回 false
。
Example #1 ftp_connect() 示例
<?php
$ftp_server = "ftp.example.com";
// set up a connection or die
$conn_id = ftp_connect($ftp_server) or die("Couldn't connect to $ftp_server");
?>
On server with multiple network card, is there a way to choose the interface to use ?
Sean's example is wrong, because it includes the protocol match, so result would be php_network_getaddresses: getaddrinfo failed: Name or service not known
Ever needed to create an FTP connection resource defaulted to a particular dir from a URI? Here's a simple function that will take a URI like ftp://username:password@subdomain.example.com/path1/path2/, and return an FTP connection resource.
<?php
function getFtpConnection($uri)
{
// Split FTP URI into:
// $match[0] = ftp://username:password@sld.domain.tld/path1/path2/
// $match[1] = ftp://
// $match[2] = username
// $match[3] = password
// $match[4] = sld.domain.tld
// $match[5] = /path1/path2/
preg_match("/ftp:\/\/(.*?):(.*?)@(.*?)(\/.*)/i", $uri, $match);
// Set up a connection
$conn = ftp_connect($match[1] . $match[4] . $match[5]);
// Login
if (ftp_login($conn, $match[2], $match[3]))
{
// Change the dir
ftp_chdir($conn, $match[5]);
// Return the resource
return $conn;
}
// Or retun null
return null;
}
?>