PHP | ftp_size() function

Last Updated : 28 Jul, 2021

The ftp_size() function is an inbuilt function in PHP which is used to get the size of a given file on FTP server.
Syntax:

ftp_size( $ftp_connection, $file_name );

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 to use where the file exists.
$file_name: It is required parameter. It specifies the file or file path on remote server i.e. FTP server.

Return Value: It returns the size of file on success or -1 on error.
Note:

All ftp server doesn't support this function.
This function is available on 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.

Below examples illustrate the ftp_size() function in PHP:
Example 1:

php

<?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 = "shiva.jpg";
 
// 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!";
        
        // Size of the file using ftp_size() function.
        $file_size = ftp_size($ftp_connection, $file);
        
        if ($file_size != -1) {
            echo "<br>$file is $file_size bytes.";
        }
        else {
            echo "<br>Error getting file size.";
        }
    } 
    else {
        echo "<br>login failed!";
    }
    
    // echo ftp_get_option($ftp_connection, 1);
    // Closing  connection
    if(ftp_close($ftp_connection)) {
        echo "<br>Connection closed Successfully!";
    } 
}

?>

Output:

Example 2: Connect to ftp server using port number 21.

php

<?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 = "shiva.jpg";
 
// Establishing ftp connection 
$ftp_connection = ftp_connect($ftp_server, 21)
    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!";
        
        // Size of the file using ftp_size() function.
        $file_size = ftp_size($ftp_connection, $file);
        
        if ($file_size != -1) {
            echo "<br>$file is $file_size bytes.";
        }
        else {
            echo "<br>Error getting file size.";
        }
    } 
    else {
        echo "<br>login failed!";
    }
    
    // echo ftp_get_option($ftp_connection, 1);
    // Closing  connection
    if(ftp_close($ftp_connection)) {
        echo "<br>Connection closed Successfully!";
    } 
}

?>

Output:

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

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