The PHP Function FTP_Site() Explained

The php function ftp_site() is one of the most useful functions for PHP developers that work with FTP in their applications. The article discusses what this function does, how to use it and provides some real-world examples.

The PHP FTP extension is an important part of the language that allows you to create secure connections to remote servers, authenticate with them and perform file transfer operations. The function ftp_connect() opens an FTP connection and once it’s connected, you can use a series of other FTP functions to upload and download files.

Some, but not all, FTP servers support SITE EXEC commands that allow you to execute shell commands on the server. These commands vary from server to server, but they are very useful for handling things like OS specific features and file permissions.

In order to execute a SITE command, the ftp_site() function takes two parameters: ftp_stream and command. ftp_stream is the ftp_connect() connection identifier and command is the SITE command that you want to send to the server.

Please note that these code snippets have not been tested in an online IDE, so they might not run properly. Please try to run them in your own server or localhost and let us know if you face any issues. We’ll be happy to assist you.

Andreas Behr - CTO of DesertCoderz
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ftp_site example

// chmod any sub-objects if recursive.         if ( $recursive && $this->is_dir( $file ) ) {
            $filelist = $this->dirlist( $file );

            foreach ( (array) $filelist as $filename => $filemeta ) {
                $this->chmod( $file . '/' . $filename, $mode, $recursive );
            }
        }

        // chmod the file or directory.         if ( ! function_exists( 'ftp_chmod' ) ) {
            return (bool) ftp_site( $this->link, sprintf( 'CHMOD %o %s', $mode, $file ) );
        }

        return (bool) ftp_chmod( $this->link, $mode, $file );
    }

    /** * Gets the file owner. * * @since 2.5.0 * * @param string $file Path to the file. * @return string|false Username of the owner on success, false on failure. */
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