PHP上传图像与FTP问题

Question

I am using the code below to upload an image through ftp

$sFile=$ftp_dir."/".$image_name;

$image=$database_row["image"];//image is store in database

$fh = tmpfile();
$fwrite($fh, $image);

$uploadFile = ftp_fput($conn_id, $sFile, $fh, FTP_ASCII); 

fclose($fh);

The ftp is creating the file and has a size BUT the file i get is not an image.When try to open on image viewer i get error.

Before switch to ftp i had this code

$image=$database_row["image"];//image is store in database
   $file = fopen( "images/".$image_name, "w" );
   fwrite( $file, $image);
   fclose( $file );

and was working fine, but now i have to use ftp.

What am i missing.

Answer 1

Try using FTP_BINARY instead of FTP_ASCII. If all else fails, open the resulting file with a hex editor.

Answer 2

You need to fseek to the beginning of the file after writing content to it and you need to use binary upload mode:

$sFile=$ftp_dir."/".$image_name;
$image=$database_row["image"];//image is store in database
$fwrite($fh, $image);
fseek($fh, 0);
$uploadFile = ftp_fput($conn_id, $sFile, $fh, FTP_BINARY); 
fclose($fh);

Answer 3

您告诉ftp以ascii（文本）格式读取图像，请通过FTP_BINARY进行更改。

Answer 4

//打开被动模式，然后它将正常工作

  ftp_pasv($conn_id, true);