PHP | ftp_size() function

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:

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<?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($ftp_connection, 1);
    // Closeing  connection
    if(ftp_close($ftp_connection)) {
        echo "<br>Connection closed Successfully!";
    
}
  
?>

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Output:

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

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<?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($ftp_connection, 1);
    // Closeing  connection
    if(ftp_close($ftp_connection)) {
        echo "<br>Connection closed Successfully!";
    
}
  
?>

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Output:

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



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