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 ftp_chdir    (PHP 3>= 3.0.13, PHP 4 , PHP 5) ftp_chdir -- 在 FTP 服务器上切换当前目录说明bool ftp_chdir  ( resource ftp_stream, string directory) 
     切换当前目录到参数 directory 指定的目录。
     
     如果成功则返回 TRUE,失败则返回 FALSE。
     | 例子 1. ftp_chdir() 例子 | 
<?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)) {
 die("FTP connection has failed !");
 }
 
 echo "Current directory : ", ftp_pwd($conn_id), "\n";
 
 if (@ftp_chdir($conn_id, "somedir")) {
 echo "Current directory is now : ", ftp_pwd($conn_id), "\n";
 } else {
 echo "Couldn't change directory\n";
 }
 ?>
 | 
 | 
 
     参见 ftp_cdup()。
    
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