Avoid variables with short names and unused functions

app/code/Transport/Email.php

@@ -7,8 +7,8 @@ use Shikiryu\Backup\Backup\BackupAbstract;
 class Email extends TransportAbstract
 {
 
-    private $to;
+    private $email_to;
-    private $from;
+    private $email_from;
     private $encoding;
     private $subject;
     private $message;
@@ -149,66 +149,14 @@ class Email extends TransportAbstract
         parent::__construct($backup, $config);
         $this->setFiles($this->backup->getFilesToBackup());
         $this->setStreams($this->backup->getStreamsToBackup());
-        $this->to       = $this->config['to'];
+        $this->email_to = $this->config['to'];
-        $this->from     = $this->config['from'];
+        $this->email_from = $this->config['from'];
         $this->encoding = $this->config['encoding'];
         $this->subject  = $this->config['subject'];
         $this->message  = $this->config['message'];
         $this->encoding = $this->config['encoding'];
     }
 
-    /**
-     * Add a recipient
-     *
-     * @param string $to
-     *
-     * @return $this
-     */
-    private function addTo($to)
-    {
-        $this->to = $to;
-        return $this;
-    }
-
-    /**
-     * Add the sender
-     *
-     * @param $from
-     *
-     * @return $this
-     */
-    private function setFrom($from)
-    {
-        $this->from = $from;
-        return $this;
-    }
-
-    /**
-     * Add the subject
-     *
-     * @param $sub
-     *
-     * @return $this
-     */
-    private function setSubject($sub)
-    {
-        $this->subject = strip_tags($sub);
-        return $this;
-    }
-
-    /**
-     * Add the message (in text)
-     *
-     * @param $mes
-     *
-     * @return $this
-     */
-    private function setMessage($mes)
-    {
-        $this->message = strip_tags($mes);
-        return $this;
-    }
-
     private function setFiles($files = array())
     {
         if (is_array($files) && !empty($files)) {
@@ -255,7 +203,7 @@ class Email extends TransportAbstract
 		$this->files = array(TEMP_DIR.$zip_name=>$zip_name);
 
         $random_hash = md5(date('r', time()));
-        $headers = "From: " . $this->from . "\r\nReply-To: " . $this->from;
+        $headers = "From: " . $this->email_from . "\r\nReply-To: " . $this->email_from;
         $headers .= "\r\nMIME-Version: 1.0\r\nContent-Type: multipart/mixed; boundary=\"" . $random_hash . "\"";
         $output = "
 
@@ -288,7 +236,7 @@ Content-Disposition: attachment; filename=" . $name . "
 " . chunk_split(base64_encode($stream));
         }
         $output.="--$random_hash--";
-        return mail($this->to, $this->subject, $output, $headers);
+        return mail($this->email_to, $this->subject, $output, $headers);
     }
 
 }

app/code/backup/BackupAbstract.php

@@ -56,19 +56,19 @@ abstract class BackupAbstract
     /**
      * Check if all files got the minimum given size.
      *
-     * @param int $fs
+     * @param int $file_size
      *
      * @return bool
      */
-    public function checkMinimumFilesize($fs)
+    public function checkMinimumFilesize($file_size)
     {
         foreach ($this->_filesToBackup as $file => $name) {
-            if (filesize($file) < $fs) {
+            if (filesize($file) < $file_size) {
                 return false;
             }
         }
         foreach ($this->_streamsToBackup as $name => $file) {
-            if (mb_strlen($file, 'utf-8') < $fs) {
+            if (mb_strlen($file, 'utf-8') < $file_size) {
                 return false;
             }
         }

app/code/backup/Mysql.php

@@ -15,7 +15,7 @@ class Mysql extends BackupAbstract
      */
     protected $tables;
     protected $host;
-    protected $db;
+    protected $database;
     protected $login;
     protected $pwd;
 
@@ -35,7 +35,7 @@ class Mysql extends BackupAbstract
         if(!empty($tables)) {
             $this->tables = $tables;
         }
-        $this->_streamsToBackup[sprintf('db-%s.sql', $this->db)] = $this->getFromTables();
+        $this->_streamsToBackup[sprintf('db-%s.sql', $this->database)] = $this->getFromTables();
         return $this;
     }
 
@@ -49,7 +49,7 @@ class Mysql extends BackupAbstract
         foreach($this->pdo->query('SHOW TABLES') as $table) {
             $this->tables[] = $table;
         }
-        $this->_streamsToBackup[sprintf('db-%s.sql', $this->db)] = $this->getFromTables();
+        $this->_streamsToBackup[sprintf('db-%s.sql', $this->database)] = $this->getFromTables();
         return $this;
     }
 
@@ -71,7 +71,7 @@ class Mysql extends BackupAbstract
             $result2->execute();
             $row2 = $result2->fetch();
             $return.= "\n\n" . $row2[1] . ";\n\n";
-            foreach($result as $i=>$row){
+            foreach($result as $row){
                     $return.= 'INSERT INTO ' . $table . ' VALUES(';
                     for ($j = 0; $j < $num_fields; $j++) {
                         $row[$j] = addslashes($row[$j]);
@@ -102,7 +102,7 @@ class Mysql extends BackupAbstract
 
     protected function preBuild()
     {
-        $this->pdo = new \PDO('mysql:host='.$this->host.';dbname='.$this->db, $this->login, $this->pwd);
+        $this->pdo = new \PDO('mysql:host='.$this->host.';dbname='.$this->database, $this->login, $this->pwd);
     }
 
     protected function postBuild()