Hej udviklere,
Jeg har i lang tid været væk fra programmering og udvikling, men fik i dag lyst til at starte igen 

Jeg er begyndt på en såkaldt "toolbox", en class hvor jeg vil have en masse nyttige funktioner til brug i fremtidige projekter.
Jeg vil gerne vide om der er noget jeg kan optimere og gøre bedre/hurtigere.
-  <?php
-  /*
-  **Lets bring out the amazing toolbox!
-  */
-  
-  include_once('class.toolbox.php');
-  
-  
-  class database extends toolbox {
-  
-      /*
-      **Version 
-      */
-      public $version = '0.1.1';
-  
-      /*
-      **Random $variables
-      */
-      private $con = false; // Checks to see if the connection is active
-      private $result = array(); // Results that are returned from the query
-      private $order;
-      private $limit;
-      private $select;
-  
-      /*
-      **Connection handler
-      */
-      private $mysqli;
-  
-      /*
-      **Connect function
-      */
-      public function connect() {
-          
-          $this->mysqli = new mysqli($this->mysql_host, $this->mysql_user, $this->mysql_pw, $this->mysql_db);
-  
-          //Check for errors during connection.
-          if($this->mysqli->connect_errno) {
-              
-              $this->log($this->mysqli->connect_error);
-              exit('Error connecting to host');
-  
-          }
-  
-          return true;
-  
-      }
-  
-      /*
-      **Close connection function
-      */
-      public function closeConnection() {
-  
-          $this->mysqli->close();
-  
-      }
-  
-      /*
-      **Execute function
-      */
-      public function execute($query) {
-          
-          if(!$result = $this->mysqli->query($query)) {
-              $this->log($this->mysqli->error.' Query: '.$query);
-              exit('Error executing query.');
-          }
-  
-          $this->reset();
-          return $result;
-  
-      }
-  
-      /*
-      **Delete function
-      */
-      public function delete($table) {
-          $delete = "DELETE FROM {$table}";
-  
-          if(isset($this->where))
-              $delete .= " WHERE $this->where";
-          if(isset($this->limit))
-              $delete .= " LIMIT $this->limit";
-  
-          return $this->execute($delete);
-  
-      }
-  
-      /*
-      **Update function
-      */
-      public function update($table, $changes) {
-  
-          $update = 'UPDATE '.$table.' SET ';
-          foreach($changes as $field=>$value) {
-              $update .= "`".$this->sanitize($field)."`='".$this->sanitize($value)."',";
-          }
-  
-          //Remove our last comma
-          $update = substr($update, 0, -1);
-  
-          if(isset($this->where))
-              $update.= 'WHERE '. $this->where;
-  
-          return($this->execute($update));
-  
-  
-      }
-  
-      /*
-      **Insert Function
-      */
-      public function insert($table, $data) {
-          
-          $fields = '';
-          $values = '';
-  
-          foreach($data as $f=>$v) {
-              
-              $fields .= $this->sanitize("`{$f}`,");
-              $values .= (is_numeric($v) && (intval($v)==$v) ? $this->sanitize($v)."," : "'".$this->sanitize($v)."',");
-  
-          }
-  
-          //Remove commas
-          $fields = substr($fields, 0, -1);
-          $values = substr($values, 0, -1);
-  
-          $insert = "INSERT INTO {$table} ({$fields}) VALUES({$values})";
-  
-          return($this->execute($insert));
-  
-      }
-      
-      /*
-      **Get function
-      */
-      public function get($table) {
-          
-          if(isset($this->select))
-              $get = "SELECT {$this->select}";
-          else
-              $get = "SELECT *";
-          
-          $get .= " FROM {$table}";
-  
-          if(isset($this->where))
-              $get .= " WHERE {$this->where}";
-          if(isset($this->order))
-              $get .= " ORDER BY $this->order";
-          if(isset($this->limit))
-              $get .= " LIMIT $this->limit";
-          
-          $result = $this->execute($get);
-  
-          if($result->num_rows > 0) {
-              
-              while($row = $result->fetch_object())
-                  $x[] = $row;
-  
-          }
-          else
-              return false;
-          return $x;
-  
-  
-      }
-  
-      /*
-      **Order function
-      */
-      public function order($row, $how) {
-          $this->order = $this->sanitize("`$row` $how");
-      }
-  
-      /*
-      **Limit function
-      */
-      public function limit($first, $second = 0) {
-          $limit = $this->sanitize($first);
-          if($second!=0)
-              $limit .= ','.$this->sanitize($second);
-  
-          $this->limit = $limit;
-  
-      }
-  
-      /*
-      **Select function
-      */
-      public function select($data) {
-          $this->select = $this->sanitize($data);
-      }
-  
-      /*
-      **Where function
-      */
-      public function where($row, $value) {
-          if(isset($this->where))
-              $where .= " AND {$row} = '{$value}'";
-          else
-              $where = "{$row} = '{$value}'";
-      }
-  
-      /*
-      **Where or function
-      */
-      public function whereOr($row, $value, $row2, $value2) {
-          if(isset($this->where))
-              $this->where .= " AND $row = '$value' OR $row2 = '$value2'";
-          else
-              $this->where = "$row = '$value' OR $row2 = '$value2'";
-      }
-  
-      /*
-      **Sanitize function
-      */
-      public function sanitize($str) {
-          return $this->mysqli->real_escape_string($str);
-      }
-  
-      /*
-      **Reset function
-      */
-      public function reset() {
-          unset($this->order);
-          unset($this->limit);
-          unset($this->select);
-          unset($this->where);
-  
-          return true;
-      }
-  
-  
-      /*
-      **__destruct function
-      */
-      public function __destruct() {
-          $this->closeConnection();
-      }
-  
-  
-  }
-  
-  ?>
Min toolbox class:
-  <?php
-  
-  class toolbox {
-  
-      /*
-      **Version
-      */
-      public $version = '0.1.3';
-  
-      /*
-      **Mysql login credentials
-      */
-      public $mysql_host = 'localhost';
-      public $mysql_user = 'root';
-      public $mysql_pw = 'root';
-      public $mysql_db = 'toolbox';
-      
-      public $domain = 'http://localhost:8888/helpers/'; /* Domain name here */
-      public $document_root = '/helpers';
-  
-      /*
-      **Domain function, if anybody likes it this way?!
-      */
-      public function get_domain() {
-          return $this->domain;
-      }
-  
-      /*
-      **Get root function, if anybody likes it this way?!
-      */
-      public function get_root() {
-          return $this->document_root;
-      }
-  
-      /*
-      ** Remove spaces from a string
-      */
-      public function remove_space($var) {
-          return str_replace(' ', '', $var);
-      }
-  
-      /*
-      **Get extension from a file, careful though! only works if the file doesn't have "." in it's name
-      */
-      public function extension($var) {
-          return strrchr($var, '.');
-      }
-  
-      /*
-      **Create a unique string based on time
-      */
-      public function unique_string() {
-          return substr(md5(time()), 0, 5);
-      }
-  
-      /*
-      **Create a html redirect
-      */
-      public function redirect($url, $seconds, $message) {
-          $url = $this->domain.$url;
-          $data = '<meta HTTP-EQUIV="REFRESH" content="'.$seconds.'; url='.$url.'">';
-          $data .= $message;
-  
-          return $data;
-      }
-  
-  
-      /*
-      **Anchor function
-      */
-      public function anchor($link, $text, $other = '') {
-          
-          if($other=='outside')
-              $link = $link;
-          else
-              $link = $this->domain . $link;
-  
-          $data = '<a href="'. $link .'"';
-          $data .= ' '. $other;
-          $data .= '>';
-          $data .= $text;
-          $data .= '</a>';
-  
-          return $data;
-  
-      }
-      /*
-      **Break function
-      */
-      public function br($breaks = 1) {
-          $data = '';
-          for($i=1;$i<=$breaks;$i++)
-              $data .= '<br />';
-  
-          return $data;
-      }
-  
-      /*
-      **New line function
-      */
-      public function nl($nls = 1) {
-          
-          $data = '';
-          for($i=1;$i<=$nls;$i++)
-              $data .= "\n";
-  
-          return $data;
-  
-      }
-  
-      /*
-      **New line and break function combined
-      */
-      public function nlbr($lines = 1) {
-          
-          $data = '';
-          for($i=1;$i<=$lines;$i++)
-              $data .= '<br />'."\n";
-  
-          return $data;
-  
-      }
-  
-      /*
-      **Heading function
-      */
-      public function heading($heading, $version, $extra = '') {
-          
-          if(!is_int($version)) $version = 2;
-  
-          $data = '<h'. $version;
-          $data .= ' '. $extra;
-          $data .= '>';
-          $data .= $heading;
-          $data .= '</h'.$version.'>';
-  
-          return $data;
-      }
-  
-      /*
-      **Segment function
-      */
-      public function segment($number, $dummies='') {
-  
-          $params = explode('/', substr($_SERVER['PHP_SELF'], 1));
-  
-          if($number=='all')
-              return $params;
-          else
-              if($dummies==true) {
-                  return $params[($number-1)];
-              }
-              else
-                  return $params[$number];
-  
-      }
-  
-      /*
-      **Detect language of browser function
-      */
-      public function detect_language() {
-          
-          $language = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
-  
-          if($language=='da')
-              $language = 'danish';
-          elseif($language=='en')
-              $language = 'english';
-          else
-              $language = $language;
-  
-          return $language;
-  
-      }
-  
-      /*
-      **Test language function, to add your own language to detect_language() function above ^^
-      */
-      public function test_language() {
-          return $language = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
-      }
-  
-      /*
-      **Log function
-      */
-      public function log($msg) {
-          
-          $date = date('H:i:s d-m-Y');
-          $date2 = date('d-m-Y');
-          /*
-          **You may need to edit filename to the right directory
-          */
-          $filename = '../logs/'.$date2.'.log';
-  
-          $log_content = $date."    ";
-          $log_content .= $msg."    ";
-          $log_content .= $_SERVER['REMOTE_ADDR']."    ";
-          $log_content .= $_SERVER['PHP_SELF'];
-          $log_content .= "\n";
-  
-          if(file_exists($filename)) {
-              $log = file_get_contents($filename);
-              $log = $log.$log_content;
-              file_put_contents($filename, $log);
-          }
-          else
-              file_put_contents($filename, $log_content);
-      
-      }
-  
-  }
-  
-  
-  
-  ?>
Jeg ville også gerne vide om der var noget i synes jeg skulle tilføje til min "toolbox"