PHP | ftp_mdtm() Function

The ftp_mdtm() function is an inbuilt function in PHP which is used to get time when the file on FTP server was last modified.

Syntax:

ftp_mdtm( $ftp_connection, $file )

Parameter: This function accepts two parameters as mentioned above and described below:

$ftp_connection: It is required parameter. It specifies the already existing FTP connection.
$file: It is required parameter. It specifies the file or path of the file in remote server i.e. FTP server whose last modified will be retrieved.

Return Value: It returns last modified time as a UNIX timestamp on success or -1 on error.

Note:

This function is available for PHP 4.0.0 and newer version.
The following examples cannot be run on online IDE. So try to run in some PHP hosting server or localhost with proper ftp server name.
This function does not works for directories. All server may not support this function.

Example:

<?php 
   
// Connect to FTP server 
   
// Use a correct ftp server 
$ftp_server = "localhost"; 
   
// Use correct ftp username 
$ftp_username="user"; 
   
// Use correct ftp password corresponding 
// to the ftp username 
$ftp_userpass="user"; 
  
// File name or path to upload to ftp server 
$file = "demo_test.txt"; 
   
// Establishing ftp connection  
$ftp_connection = ftp_connect($ftp_server)  
        or die("Could not connect to $ftp_server"); 
  
if($ftp_connection) { 
    echo "successfully connected to the ftp server!"; 
      
    // Logging in to established connection with 
    // ftp username password 
    $login = ftp_login($ftp_connection, $ftp_username, $ftp_userpass); 
      
    if($login) { 
          
        // Checking whether logged in successfully or not 
        echo "<br>logged in successfully!"; 
          
        // Storing last modified data in $last_mod 
        $last_mod = ftp_mdtm($ftp_connection, $file); 
          
        if ($last_mod != -1) { 
              
            // Checking whether any error occurred or not  
            // while retrieving last modified data 
            echo "<br> $file was modified on ".  
                    date("F d Y H:i:s.", $last_mod)."."; 
        } 
        else { 
            echo "<br>could not get last modified."; 
        } 
           
    } 
    else { 
        echo "<br>login failed!"; 
    } 
          
    // Closeing  connection 
    if(ftp_close($ftp_connection)) { 
        echo "<br>Connection closed Successfully!"; 
    }  
} 
?> 

Output:

Reference: https://www.php.net/manual/en/function.ftp-mdtm.php

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