如何在codeigniter中将随机数保存到mysql

Question

请任何人帮助我想根据请求的数字生成随机字符串，并使用 codeigniter 的 MVC 模式将它们存储到我的 mysql 数据库中的一个表中。谢谢 控制器

public function generate()
    {
$this->news_model->generate_pin();
        $this->load->helper('string');
      echo random_string('alnum',15);

模型

public function generate_pin(){

      $this->load->helper('string');
   $this->db->insert('pin', $number); 

但什么也没发生，我也希望它一次运行 10 个数组

Answer 1

您应该在控制器而不是模型中处理任何应用程序逻辑。此示例将 10 个随机生成的字符串插入到数据库表中：

// THE CONTROLLER
public function generate() 
{
    // LOAD THE STRING HELPER
    $this->load->helper('string');

    $pins = array(); // HOLDER OF PIN CODES 
    $num_pins = 10; // THE NUMBER OF PIN CODES YOU WANT TO GENERATE
    $len_pins = 15; // THE LENGTH OF THE PIN CODES YOU WANT TO GENERATE

    // LOOP and generate the PIN codes
    for($i = 0; $i < $num_pins; $i++) {
        //REPLACE 'pin_fieldname' WITH WHATEVER FIELD NAME YOU HAVE IN YOUR TABLE 'pin'
        $pins[] = array('pin_fieldname'=>random_string('alnum', $len_pins));
        //IF YOU WANT TO HAVE DIFFERENT LENGTHS OF YOUR PIN CODES 
        //YOU CAN PUT SOME LOGIC HERE TO CHANGE $len_pins
        // $len_pins = {WHATEVER NUMBER};    
    }   

    // INSERT THE PINS INTO THE DATABASE
    if($this->news_model->insert_pins($pins)){
        // SUCCESS INSERT... DO SOMETHING...    
    } else {
        // FAILED INSERT.. DO SOMETHING...
    }
}

和模型：

// THE MODEL
public function insert_pins($pins){
    // LOAD THE DATABASE YOU WANT TO USE (IF NOT ALREADY DONE ELSEWHERE)
    $this->db = $this->load->database(); //https://www.codeigniter.com/user_guide/database/connecting.html
    return $this->db->insert_batch('pin', $pins);
}