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# XXXV.FTP Functions

# 介紹

The functions in this extension implement client access to file servers speaking the File Transfer Protocol (FTP) as defined in http://www.faqs.org/rfcs/rfc959. This extension is meant for detailed access to an FTP server providing a wide range of control to the executing script. If you only wish to read from or write to a file on an FTP server, consider using the ftp:// wrapper with the filesystem functions which provide a simpler and more intuitive interface.

# 需求

建立這個延伸不需要任何外部程式庫。

# 安裝

In order to use FTP functions with your PHP configuration, you should add the --enable-ftp option when installing PHP 4 or --with-ftp when using PHP 3.

Windows 版本的 PHP 已內建此延伸的支援﹐所以你毋須再載入附加的延伸來使用這些功能。

# 執行時期組態

`php.ini`中沒有定義此延伸的組態指令。

# 資源類型

This extension uses one resource type, which is the link identifier of the FTP connection, returned by ftp_connect().

# 預先定義常數

以下的常數由此延伸定義，只在這個延伸被編譯成PHP或實行時期被動態載入時有效。

`FTP_ASCII` (integer)

`FTP_TEXT` (integer)

`FTP_BINARY` (integer)

`FTP_IMAGE` (integer)

`FTP_TIMEOUT_SEC` (integer)

  See ftp_set_option() for information.

The following constants were introduced in PHP 4.3.0.

`FTP_AUTOSEEK` (integer)

  See ftp_set_option() for information.

`FTP_AUTORESUME` (integer)

  Automatically determine resume position and start position for GET and PUT requests (only works if FTP_AUTOSEEK is enabled)

`FTP_FAILED` (integer)

  Asynchronous transfer has failed

`FTP_FINISHED` (integer)

  Asynchronous transfer has finished

`FTP_MOREDATA` (integer)

  Asynchronous transfer is still active

# 範例

示範 1.FTP example
`<?php // set up basic connection $conn_id = ftp_connect($ftp_server); // login with username and password $login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass); // check connection if ((!$conn_id) || (!$login_result)) { echo "FTP connection has failed!"; echo "Attempted to connect to $ftp_server for user $ftp_user_name"; exit; } else { echo "Connected to $ftp_server, for user $ftp_user_name"; } // upload the file $upload = ftp_put($conn_id, $destination_file, $source_file, FTP_BINARY); // check upload status if (!$upload) { echo "FTP upload has failed!"; } else { echo "Uploaded $source_file to $ftp_server as $destination_file"; } // close the FTP stream ftp_close($conn_id); ?>`

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