警告：ftp_put（）期望参数1是资源，布尔在

Question

给出我试图做一个窗体，上传几个字段和3个图像。图像将通过FTP上传，当php上传到远程服务器时，通过ftp_connect（）连接到ftp时出现问题。当php在共享主机中时，它无法连接到服务器。但是，当php在本地主机，它显示没有错误。我现在试图在Localhost上完成这项工作，并首先将图像ftp_put传输到远程服务器，以隔离错误。 目前我收到此错误。

Warning: ftp_put() expects parameter 1 to be resource, boolean given in line 69 

这是本ftp_put($login,"abc.info/$photo",$_FILES["file"]["tmp_name"][$i],FTP_ASCII)

<?php 
ini_set('display_errors', 1); error_reporting(E_ALL); 

ob_start(); 
session_start(); 
include 'connect.php'; 
include 'Agentftpconnect.php'; 
if(!isset($_SESSION['username'])) 
{ 
    header("Location: home.php"); 
    exit; 
} 


if ($_POST) 
{ 
//get form data 



$Listingname = addslashes(strip_tags($_POST['Listingname'])); 
$Location = addslashes(strip_tags($_POST['Location'])); 
$nobed = addslashes(strip_tags($_POST['nobed'])); 
$zip = addslashes(strip_tags($_POST['zip'])); 
$price = ($_POST['price']); 


if (!$Listingname||!$nobed||!$Location||!$zip||!$price) 
    die ("Please fill out all fields"); 
    else 



    for($i=0;$i<3;$i++) 
    { 


if ((($_FILES["file"]["type"][$i] !== "image/gif") 
|| ($_FILES["file"]["type"][$i] !== "image/jpeg") 
|| ($_FILES["file"]["type"][$i] !== "image/jpg") 
|| ($_FILES["file"]["type"][$i] !== "image/pjpeg") 
|| ($_FILES["file"]["type"][$i] !== "image/x-png") 
|| ($_FILES["file"]["type"][$i] !== "image/png")) 
    && ($_FILES["file"]["size"][$i] > 400000)) 
die("File is not correct"); 

else{ 

    if ($_FILES["file"]["error"][$i] > 0) 
    { 
    echo "Return Code: " . $_FILES["file"]["error"][$i] . "<br>"; 
    } 
    else 
    { 
    echo "Upload: " . $_FILES["file"]["name"][$i] . "<br>"; 
    echo "Size: " . ($_FILES["file"]["size"][$i]/1024) . " kB<br>"; 
    echo "Temp file: " . $_FILES["file"]["tmp_name"][$i] . "<br>"; 
    echo "<br>"; 

    if (file_exists("abc.info/rent" . $_FILES["file"]["name"][$i])) 
     { 
     die($_FILES["file"]["name"][$i] . " already exists please add another file, or change the name "); 
     } 

    else 

     { 
     $photo=$_FILES["file"]["name"][$i]; 
     ftp_put($login,"abc.info/$photo",$_FILES["file"]["tmp_name"][$i],FTP_ASCII) or die("Can not upload"); 
     echo "Stored in: " . "abc.info/rent/" . $_FILES["file"]["name"][$i]; 
     } 
    } 
} 



} 

    { 
     $photo0=$_FILES["file"]["name"][0]; 
     $photo1=$_FILES["file"]["name"][1]; 
     $photo2=$_FILES["file"]["name"][2]; 
     $username=$_SESSION['username']; 

      //register into database 
      mysqli_query($con,"INSERT INTO Listing (username,Listingname,Location,nobed,zip,price,pic1,pic2,pic3) VALUES 
       ('$username','$Listingname','$Location','$nobed','$zip','$price','$photo0','$photo1','$photo2');") or die(mysqli_error()); 


      echo "Listing Added"; 
    }   

     } 





else 
{ 

?> 

<form action="Submitlisting8.php" method="post" 
enctype="multipart/form-data"> 
Listing Name:<br /> 
<input type='text' name='Listingname'><p /> 
Location:<br /> 
<input type='text' name='Location'><p /> 
Number of Beds:<br /> 
<input type='test' name='nobed'><p /> 
Zip:<br /> 
<input type='text' name='zip'><p /> 
Price:<br /> 
<input type='text' name='price'><p /> 


<label for="file">Pic1(File must be exceed 4mb):</label> 
<input type="file" name="file[]" id="file[]"><br> 
<label for="file">Pic2(File must be exceed 4mb):</label> 
<input type="file" name="file[]" id="file[]"><br> 
<label for="file">Pic3(File must be exceed 4mb):</label> 
<input type="file" name="file[]" id="file[]"><br> 
<br> 
<input type='submit' name='submit' value='Submit'> 
</form> 

<FORM METHOD="LINK" ACTION="agentaccount.php"> 
<INPUT TYPE="submit" VALUE="Back to Account"> 
</form> 

<?php 

} 



?> 

FTPconnect

<?php 
$ftp_user_name='name'; 
$ftp_user_pass='pass'; 
$connection = 'ftp.abc.info'; 

$connect = ftp_connect($connection) or die("Couldn't connect to $connection"); 
$login=ftp_login($connect, $ftp_user_name, $ftp_user_pass); 
if(!$login) 
{ 
    die("But failed at login Attempted to connect to $connection for user $ftp_user_name...."); 
} 


?> 

Answer 1

ftp_put()需要它是通过使用ftp_connect()获得有效资源。如果您看到此错误讯息，您致电ftp_connect()失败。您需要获得ftp_connect()的有效资源，如果不能，则需要确定导致脚本无法连接到远程主机的原因，因为这是造成问题的根本原因。

为了防止您的脚本失败，你应该换你尝试FTP在if声明检查，看看是否连接成功ftp_connect()：

if (($resource = ftp_connect($host)) !== false) { 
    // do FTP stuff 
}