©
This document uses PHP Chinese website manual Release
(PHP 4, PHP 5, PHP 7)
ftp_mdtm — 返回指定文件的最后修改时间
$ftp_stream
, string $remote_file
)ftp_mdtm() 检查指定文件的最后修改时间,并以 UNIX 时间戳的方式返回。如果发生错误,或文件不存在则返回 -1。
Example #1 ftp_mdtm() 例子
<?php
$file = 'somefile.txt' ;
// connect to the server
$conn_id = ftp_connect ( $ftp_server );
$login_result = ftp_login ( $conn_id , $ftp_user_name , $ftp_user_pass );
// get the last modified time
$buff = ftp_mdtm ( $conn_id , $file );
if ( $buff != - 1 ) {
// somefile.txt was last modified on: March 26 2003 14:16:41.
echo " $file was last modified on : " . date ( "F d Y H:i:s." , $buff );
} else {
echo "Couldn't get mdtime" ;
}
// close the connection
ftp_close ( $conn_id );
?>
如果成功返回一个 UNIX 时间戳,否则返回 -1。
Note:
某些 FTP 服务器可能会不支持这个特性。
Note:
ftp_mdtm() 函数不适用于检查目录。
[#1] Jaytop [2005-06-12 12:51:50]
Seems to work with directories as well on my Win32 box.
[#2] wseibert at hxcorp dot com [2004-11-04 12:55:27]
When trying to get the modified time of a file that has spaces in it, ftp_mdtm will fail on some FTP servers. If this happens, surround the file name with quotes.
$file_name = "my index.html";
$file_modtime = ftp_mdtm($connection, '"'.$file_name.'"')