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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace SF2Helpers\SFTPBundle\SFTP;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class SFTP implements ConnectionInterface, ResourceTransferInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Connection instance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var $connection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $connection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Established sftp resource  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var $sftp  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $sftp;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritdoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function connect($host, $username, $password = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $connection = ssh2_connect($host);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        is_null($password) ? ssh2_auth_agent($connection, $username) : ssh2_auth_password($connection, $username, $password);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->connection = $connection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->sftp       = ssh2_sftp($connection);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritdoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function connectWithKey($host, $username, $pubkeyfile, $privkeyfile, $passphrase = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $connection = ssh2_connect($host);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ssh2_auth_pubkey_file($connection, $username, $pubkeyfile, $privkeyfile, $passphrase);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->connection = $connection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->sftp       = ssh2_sftp($connection);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritdoc  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                                                    
                                                                                                        
            
            
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                    public function fetchFrom($remoteFile, $localFile)  | 
            
                            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $sftp = "ssh2.sftp://$this->sftp";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $data = file_get_contents($sftp . $remoteFile);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (!$data) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            throw new \Exception('File can`t be loaded from server'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        file_put_contents($localFile, $data);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritdoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                    public function sendTo($localFile, $remoteFile)  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $sftp = "ssh2.sftp://$this->sftp";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $data = file_get_contents($localFile);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!file_put_contents($sftp . $remoteFile, $data)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new \Exception('File could not be uploaded to server'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritdoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getRemoteFilesList($dir)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $handle = opendir("ssh2.sftp://$this->sftp" . $dir); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $files  = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        while (false !== ($entry = readdir($handle))) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $files[] = $entry;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $files;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @inheritdoc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function disconnect()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ssh2_exec($this->connection, 'exit');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        unset($this->connection);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.