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ftp_chdir

(PHP 4, PHP 5, PHP 7, PHP 8)

ftp_chdir在 FTP 服务器上改变当前目录

说明

ftp_chdir(FTP\Connection $ftp, string $directory): bool

将当前目录切换为指定的目录。

参数

ftp

FTP\Connection 实例。

directory

目标目录。

返回值

成功时返回 true, 或者在失败时返回 false。如果切换目录失败,PHP 还会发出一条警告。

更新日志

版本 说明
8.1.0 现在 ftp 参数接受 FTP\Connection 实例,之前接受 resource

示例

示例 #1 ftp_chdir() 例子

<?php

// set up basic connection
$ftp = ftp_connect($ftp_server);

// login with username and password
$login_result = ftp_login($ftp, $ftp_user_name, $ftp_user_pass);

// check connection
if ((!$ftp) || (!$login_result)) {
die(
"FTP connection has failed !");
}

echo
"Current directory: " . ftp_pwd($ftp) . "\n";

// try to change the directory to somedir
if (ftp_chdir($ftp, "somedir")) {
echo
"Current directory is now: " . ftp_pwd($ftp) . "\n";
} else {
echo
"Couldn't change directory\n";
}

// close the connection
ftp_close($ftp);
?>

参见

add a note

User Contributed Notes 2 notes

up
6
neil at 11 out of 10
15 years ago
Thanks to h3 at valleyfield dot net

Same function with some minor changes and comments added

FTP function checks if a directory exists

<?php
function ftp_is_dir( $dir ) {
global
$ftpcon;
// get current directory
$original_directory = ftp_pwd( $ftpcon );
// test if you can change directory to $dir
// suppress errors in case $dir is not a file or not a directory
if ( @ftp_chdir( $ftpcon, $dir ) ) {
// If it is a directory, then change the directory back to the original directory
ftp_chdir( $ftpcon, $original_directory );
return
true;
}
else {
return
false;
}
}
?>
up
4
info at swiftyexpress dot com
15 years ago
Works like the other functions in this page's notes, but this one doesn't make use of a global FTP connection, so it takes parameters like the other functions in the extension

<?php
function ftp_directory_exists($ftp, $dir)
{
// Get the current working directory
$origin = ftp_pwd($ftp);

// Attempt to change directory, suppress errors
if (@ftp_chdir($ftp, $dir))
{
// If the directory exists, set back to origin
ftp_chdir($ftp, $origin);
return
true;
}

// Directory does not exist
return false;
}
?>


[NOTE BY danbrown AT php DOT net: As the contributor mentions, the original function was noted here by (h3 AT valleyfield DOT net) on 13-JUL-2007.]
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