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CodeIgniter

CodeIgniter. Database Brugerinput Form Validation. Database Library. http://codeigniter.com/user_guide/database/index.html For bruge den skal det enten være autoloaded ( config/autoload.php ) eller $ this->load->database ();. To måder at hente data. OO-versionen

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CodeIgniter

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  1. CodeIgniter • Database • Brugerinput • Form Validation JFH

  2. Database Library • http://codeigniter.com/user_guide/database/index.html • For bruge den skal det enten være autoloaded (config/autoload.php)eller$this->load->database(); JFH

  3. To måder at hente data • OO-versionen $query = $this->db->query( 'SELECT name, email FROM my_table');foreach ($query->result() as $row){    echo $row->name;    echo $row->email;} • Som vi er vant til, næsten $query = mysql_query( 'SELECT name, email FROM my_table');while (row=mysql_fetch_array($query){echo $row['name'];echo $row['email'];} JFH

  4. Query bindings • Hver gang vi bruger noget der kommer fra brugeren i vores SQL skal/bør vi QB’e • Alt hvad vi henter med $_REQUEST, $_GET, $_POST, $_COOKIE kommer fra brugeren og er potentielt farligt (også selvom det kommer fra SELECT elementer eller lignende som vi selv har lavet) JFH

  5. Query bindings, del 2 • Vi snakkede lidt om det sidst: $sql = "SELECT * FROM some_table WHERE id = ? AND status = ? AND author = ?"; $params = array(3, 'live', 'Rick'); $this->db->query($sql, $params); JFH

  6. Brugerinput • http://codeigniter.com/user_guide/libraries/input.html • CI bruger stort set ikke $_GET (det ligger i URL’en) • I stedet for $_POST[’var’] bruger vi $this->input->post(’var’) • $this->input->post(’x’) tjekker om variablen findes og returnerer false hvis den ikke gør JFH

  7. Brugerinput $_POST $this->input->post If($x=$this->input->post(’x’)){ //gør noget } If(isset($_POST[’x’])){ $x=$_POST[’x’]; //gør noget } JFH

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