Php 调用未定义的函数inval()

Php 调用未定义的函数inval(),php,codeigniter,codeigniter-2,Php,Codeigniter,Codeigniter 2,我在CodeIgniter中的_模型中有一个错误。我到处都找过了,但什么都没找到我的模型: <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class MY_Model extends CI_Model { protected $_table_name = ''; protected $_primary_key = 'id'; protected

我在CodeIgniter中的_模型中有一个错误。我到处都找过了,但什么都没找到我的模型:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

    class MY_Model extends CI_Model
    {
    protected $_table_name = '';
    protected $_primary_key = 'id';
    protected $_primary_filter = 'intval';
    protected $_order_by = '';
    protected $_rules = array();
    protected $_timestamps = FALSE;
    function __construct(){
        parent::__construct();
        $this->load->database();
    }
    public function get($id = NULL, $single = FALSE)
    {
        if ($id != NULL)
        {   
            $filter = $this->_primary_filter;
            $id = $filter($id);
            $this->db->where($this->_primary_key,$id);
            $method = 'row';
        }
        elseif($single == TRUE)
        {
            $method = 'row';
        }
        else
        {
            $method = 'result';
        }   
        if(!count($this->db->ar_orderby))
        {
            $this->db->order_by($this->_order_by);  
        }
        return $this->db->get($this->_table_name)->$method();
    }
    public function get_by($where, $single = FALSE)
    {
        $this->db->where($where);
        return $this->get(NULL, $single);
    }
    public function save($data, $id = NULL)
    {
        //Set timestamp
        if($this->_timestamps == TRUE)
        {
            $now = date('Y-m-d H:i:s');
            $id || $data['created'] = $now;
            $data['modified'] = $now;
        }
        //INSERT
        if ($id ===NULL)
        {
            !isset($data[$this->_primary_key]) || $data[$this->_primary_key] = NULL;
            $this->db->set($data);
            $this->db->insert($this->_table_name);
            $id = $this->db->insert_id();
        }
        //UPDATE
        else
        {
            $filter = $this->_primary_filter;
            $this->db->set($data);
            $this->db->where($this->_primary_key,$id);
            $this->db->update($this->_table_name);
        }
        return $id;
    }
    public function delete($id)
    {
        $filter = $this->_primary_filter;
        $id = $filter($id);
        $this->db->where($this->_primary_key,$id);
        $this->db->limit(1);
        $this->db->delete($this->_table_name);
    }

}
?>
当我写:cms/page/delete…时,错误是:

Fatal error: Call to undefined function inval() in C:\xampp\htdocs\application\core\MY_Model.php on line 75

请帮助我

我想您的问题出在
delete()
函数中

$filter = $this->_primary_filter;
$id = $filter($id);
确保收到正确的
id
类型
(int,bool)

更改您的:

$filter = $this->_primary_filter;
$id = $filter($id);
致:


你能告诉我你的保存功能正常吗?更改
$id=$filter($id)
$id=intval($id)
inside
function delete()
并重试。检查$filter=$this->\u primary\u filter$id=$filter($id);您的id是否正确?
protected$\u primary\u filter='intval'但错误消息包含
无效
(不带t)。代码片段中最后一次使用此函数thingy是在第72行,而不是eror消息中所述的第75行。你确定你发布的代码就是正在执行的代码吗?你所说的“正确的id和类型(int,bool)”是什么意思?请把答案贴在这里。你可以在评论中发表你的假设。
$filter = $this->_primary_filter;
$id = $filter($id);
$id = intval($id);