PHP ftp_mdtm() 函数

PHP ftp_mdtm() 函数返回给定文件的最后修改时间。

语法

复制代码复制代码ftp_mdtm(ftp, filename) 

参数

返回值

成功时返回上次修改时间为本地 Unix 时间戳，错误时为 -1。

示例:

下面的示例显示了 ftp_mdtm() 函数的用法。

复制代码复制代码<?php
//要使用的FTP服务器
$ftp_server = "ftp.example.com";
 
$file = 'test.txt';

//FTP 连接的用户名
$ftp_user = "user";
  
//用户密码
$ftp_pass = "password";
  
//建立连接或者连接失败
$ftp = ftp_connect($ftp_server)
    or die("Could not connect to $ftp_server");
   
if($ftp) {
  echo "Successfully connected to $ftp_server!\n";
 
  //尝试登录
  if(@ftp_login($ftp, $ftp_user, $ftp_pass)) {
    echo "Connected as $ftp_user@$ftp_server\n";

    //获取最后修改时间
    $lastmodified  = ftp_mdtm($ftp, $file);

    if ($lastmodified != -1) {
      echo "$file was last modified on : "
           .date("d-M-Y H:i:s", $lastmodified);
    } else {
      echo "Could not get the last modified time";
    }
    
  } else {
    echo "Couldn't connect as $ftp_user\n";
  }
 
  //关闭连接
  if(ftp_close($ftp)) {
    echo "Connection closed successfully!\n"; 
  } 
}
?> 
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上述代码的输出将是:

复制代码复制代码Successfully connected to ftp.example.com!
Connected as user@ftp.example.com
test.txt was last modified on : 14-Oct-2021 10:48:23
Connection closed successfully! 
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