ftp_login

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。

如果成功则返回 TRUE，失败则返回 FALSE。

例子 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";
}
?>

add a note User Contributed Notes

Guibod
26-Oct-2004 04:37


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";

?>

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