FTP 函数
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ftp_login

(PHP 4, PHP 5)

ftp_login — 登录 FTP 服务器

说明

bool ftp_login ( resource $ftp_stream , string $username , string $password )

使用用户名和密码登录入给定的 FTP 连接。

成功时返回 TRUE， 或者在失败时返回 FALSE.

Example #1 ftp_login() 例子

<?php
$ftp_server = "ftp.example.com";
$ftp_user = "foo";
$ftp_pass = "bar";

// set up a connection or die
$conn_id = ftp_connect($ftp_server) or die("Couldn't connect to $ftp_server");

// try to login
if (@ftp_login($conn_id, $ftp_user, $ftp_pass)) {
    echo "Connected as $ftp_user@$ftp_server\n";
} else {
    echo "Couldn't connect as $ftp_user\n";
}
?>

参数

ftp_stream

The link identifier of the FTP connection.

username

The username (USER).

password

The password (PASS).

返回值

成功时返回 TRUE， 或者在失败时返回 FALSE. If login fails, PHP will also throw a warning.

范例

Example #2 ftp_login() example

<?php
                     
$ftp_server = "ftp.example.com";
$ftp_user = "foo";
$ftp_pass = "bar";

// set up a connection or die
$conn_id = ftp_connect($ftp_server) or die("Couldn't connect to $ftp_server"); 

// try to login
if (@ftp_login($conn_id, $ftp_user, $ftp_pass)) {
    echo "Connected as $ftp_user@$ftp_server\n";
} else {
    echo "Couldn't connect as $ftp_user\n";
}

// close the connection
ftp_close($conn_id);  
?>

FTP 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: 登录 FTP 服务器

用户评论:

mattsch at gmail dot com (01-Dec-2010 04:12)

Note that to make an anonymous ftp connection, you need to specify "anonymous" as the username and "" (empty string) as the password.

Example:
<?php
ftp_login('ftp.example.com', 'anonymous', '');
?>

Guibod (26-Oct-2004 09:37)

ftp_login does not support ftp trough proxy authentication. So think about using the new PHP5 function ftp_raw() that's allow you to send directly FTP commands. ftp_raw() allow you to send commands prior to be connected (unlike ftp_exec()).

I've writen this piece of code that's allow you to connect through a "remoteid@remotehost proxyid" proxy.

<?php
function ftp_parse_response($response, &$errstr) {
    if(!is_array($response)) {
        $errstr    = 'Parameter \$response must be an array';
        return false;
    }
       
    foreach($response as $r) {
        $code    = substr(trim($r),0,3);

        if(!is_numeric($code)) {
            $errstr    = "$code is not a valid FTP code",$code);
        }
           
        if($code > 400) {
            $errstr    = $r;
            return false;
        }
    }
       
    return true;
}

$user = "user";
$pass = "password";
$host = "ftp.example.com";
$proxyuser = "proxyuser";
$proxypass = "proxypass";
$proxyhost = "ftp.proxy.com";

$conn_id = ftp_connect($proxyhost);

if(!$conn_id) {
    die("cannot connect to proxy");
}

$commands   = array(
    "USER ".$user."@".$host." ".$proxyuser,
    "PASS ".$pass,
    "PASS ".$proxypass
);

foreach($commands as $c) {
    $ret    = ftp_raw($conn_id,$c);

    //you can write your own ftp_parse_response func that
    //use an array of string as input
    if(!ftp_parse_response($ret,$errstr)) {
        ftp_close($conn_id);
        die("cannot login to $host");
    }
}

echo "ok, now connected";
?>