PHP ftp_chmod() Function

The PHP ftp_chmod() function sets the permissions on the specified remote file to permissions. The function returns the new file permissions on success or false on error.

Syntax

ftp_chmod(ftp, permissions, filename)

Parameters

ftp Required. Specify the FTP connection to use.

permissions

Required. Specify the new permissions, given as an octal value (starting with 0). The parameter consists of four numbers:

The first number is always zero (octal value)
The second number specifies permissions for the OWNER
The third number specifies permissions for the OWNER's USER GROUP
The fourth number specifies permissions for EVERYBODY ELSE

Possible values (to set multiple permissions, add up the following numbers):

1 = execute permissions
2 = write permissions
4 = read permissions

filename Required. Specify the file to set permissions on.

Return Value

Returns the new file permissions on success or false on error.

Example:

The example below shows the usage of ftp_chmod() function.

<?php
//FTP server to use
$ftp_server = "ftp.example.com";
  
//file for which permission need to set
$file = "/home/etc/test.txt";

//username for the FTP Connection
$ftp_user = "user";
  
//password for the user
$ftp_pass = "password";
   
//set up a connection or die 
$ftp = ftp_connect($ftp_server)
    or die("Could not connect to $ftp_server");
   
if($ftp) {
  echo "Successfully connected to $ftp_server!\n";
 
  //trying to login
  if(@ftp_login($ftp, $ftp_user, $ftp_pass)) {
    echo "Connected as $ftp_user@$ftp_server\n";

    //trying to chmod $file to 644
    if (ftp_chmod($ftp, 0644, $file)) {
      echo "$file chmoded successfully to 644\n";
    } else {
      echo "Could not chmod $file.\n";
    } 
    
  } else {
    echo "Couldn't connect as $ftp_user\n";
  }

  //close the connection
  if(ftp_close($ftp)) {
    echo "Connection closed successfully!\n"; 
  } 
}
?>

The output of the above code will be:

Successfully connected to ftp.example.com!
Connected as user@ftp.example.com
/home/etc/test.txt chmoded successfully to 644
Connection closed successfully!

❮ PHP FTP Reference