从网络表单插入到pdo中

Question

为什么我的插入表单不起作用？

public function safeCar() {

    $asd = "INSERT INTO 
        'Car'(mark,
        model,
        year,
        state_num,
        mileage,
        colour,
        consumption,
        cost_less_30_inc,
        cost_more_31) 
        VALUES('$this->mark', 
        '$this->model', 
        $this->year, 
        $this->state_num, 
        $this->mileage, 
        '$this->colour', 
        $this->consumption,
        $this->cost_less_30, 
        $this->cost_more_31)";
    echo($asd);

    $this->db->prepare($asd)->execute();

我正在通过POST发送表单并尝试将数据添加到数据库中。但PHP发给我一个错误

  

致命错误：未捕获错误：在...中的字符串上调用成员函数prepare（）

     

..

但是我的字符串看起来很棒

  

INSERT INTO'Car'（标记，型号，年份，state_num，里程，颜色，消耗，cost_less_30_inc，cost_more_31）VALUES（'Fiat'，'Punto'，2003,345,32929，'black'，7,10 ，7）

     

它适用于phpMyAdmin

我犯了错误？

  

var - db其PDO对象

Answer 1

 $prepare = $this->db->prepare("INSERT INTO Car (mark, model, year,state_num,mileage,colour, consumption, cost_less_30_inc, cost_more_31) 
        VALUES (:mark, :model, :year, :state_num,:mileage,:colour,:consumption,:cost_less_30_inc,:cost_more_31)");

$prepare->execute(array(
    'mark' => 'Honda',
    'year' => 2016,
     ...
     ...
);