How can I put the results of a MySQLi prepared statement into an associative array?

Question

I have a sql query and a mysqli prepared statement:

$sql = \'SELECT photographers.photographer_id, photographers.photographer_name
    FROM photographers\';
         


        

Answer 1

If you cannot use the PDO extension. Or you are having trouble building your database class with prepared statements. How to use for insert update, delete and insert:

    $db = new database();
    $db->query = "INSERT INTO blabla (name,date,number) VALUES(?,?,?)";
    $db->params = array($name,$date,$number);
    $db->type = 'ssi'; //s=string,i=integer
    if($db->insert())
        echo 'success';

Fetch works a bit different

    $array = array();
    $db = new database();
    $db->query = "SELECT * FROM blabla WHERE id=? and someother=?";
    $db->params = array($id,$other);
    $db->type = 'is';
    $r = $db->fetch(); 
    //$r[0]['id'] for row 1
    //$r[0]['name'] for row 1
    //$r[1] .... For row 2
    //$r[2] .... For row 3
    //etc...

Now for the database class

    class database {

        private $stmt;
        private $mysqli;
        private $query;
        private $params = array();
        private $type;

        public function __set($name, $value) {
            switch ($name) {
                case 'params':
                    $this->params = $value;
                    break;
                case 'query':
                    $this->query = $value;
                    break;
                case 'type':
                    $this->type = $value;
                    break;
                default:
                    break;
            }
        }

        public function __get($name) {
            if ($name !== "mysqli" && $name !== "stmt")
                return $this->$name;
        }

        public function __construct() {
            $this->mysqli = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME, DB_PORT);
            $this->stmt = $this->mysqli->stmt_init();
        }

        private function close_con($bool) {
            if ($bool) {
                $this->stmt->free_result();
            }
            $this->stmt->close();
            $this->mysqli->close();
        }

        private function nofetch() {
            $this->stmt->prepare($this->query);
            $bind_names[] = $this->type;
            for ($i = 0; $i < count($this->params); $i++) {
                $bind_name = 'bind' . $i;
                $$bind_name = $this->params[$i];
                $bind_names[] = &$$bind_name;
            }
            call_user_func_array(array($this->stmt, "bind_param"), $bind_names);

            if ($this->stmt->execute()) {

                $this->close_con(false);
                return true;
            }
            $this->close_con(false);
            return false;
        }

        public function insert() {
            if ($this->nofetch()) {
                return true;
            }
            return false;
        }

        public function update() {
            if ($this->nofetch()) {
                return true;
            }
            return false;
        }

        public function delete() {
            if ($this->nofetch()) {
                return true;
            }
            return false;
        }

        public function fetch() {
            $result_out = array();
            $this->stmt->prepare($this->query);
            $bind_names[] = $this->type;
            if (count($this->params) > 0) {
                for ($i = 0; $i < count($this->params); $i++) {
                    $bind_name = 'bind' . $i;
                    $$bind_name = $this->params[$i];
                    $bind_names[] = &$$bind_name;
                }
                call_user_func_array(array($this->stmt, "bind_param"), $bind_names);
            }
            if ($this->stmt->execute()) {
                $result = $this->stmt->result_metadata();
                $cols = $result->fetch_fields();
                foreach ($cols as $col) {

                    $name = str_replace("-", "_", $col->name);

                    $$name = null;
                    if ($name == null)
                        $name = 'name';
                    $bindarray[$name] = &$$name;
                }

                call_user_func_array(array($this->stmt, 'bind_result'), $bindarray);
                $this->stmt->store_result();
                $copy = create_function('$a', 'return $a;');
                while ($this->stmt->fetch()) {
                    $result_out[] = array_map($copy, $bindarray);
                }
            }
            $this->close_con(true);
            return $result_out;
        }

    }

I hope this is helpful