Php SQL-选择id不在数组中的id
我想从表中选择4条新闻后的最后12条。 我试过了,但没有结果。我得到了未定义的$newsPhp SQL-选择id不在数组中的id,php,mysql,sql,codeigniter,Php,Mysql,Sql,Codeigniter,我想从表中选择4条新闻后的最后12条。 我试过了,但没有结果。我得到了未定义的$news public function get_all_news_home() { $news = array(); # ne conectam la baza de date $this->load->database(); # selectam stirile de top $last_news_query = $this->db->query("
public function get_all_news_home()
{
$news = array();
# ne conectam la baza de date
$this->load->database();
# selectam stirile de top
$last_news_query = $this->db->query("SELECT * FROM News WHERE Type = 1 AND Ready='Y' ORDER BY Date DESC LIMIT 4");
$last_news = $this->db->query($last_news_query);
$last_news = ($last_news->num_rows()) ? $last_news->result_array() : NULL;
foreach ($last_news as $ln)
{
array_push($news,array('id' => $ln['ID']));
}
$all_news = $this->db->query("SELECT * FROM News WHERE News.Ready = 'Y' AND News.ID NOT IN ('$news') ORDER BY Date DESC LIMIT 12");
if($all_news->num_rows())
{
$all_news = $all_news->result_array();
}
else
{
$all_news = NULL;
}
return $all_news;
}
请帮帮我。如何排除前4个id?请尝试以下操作:
...
$newsIds = implode(',', array_values($news));
...
$all_news = $this->db->query("SELECT * FROM News WHERE News.ID NOT IN ('$newsIds') ORDER BY Date DESC LIMIT 12");
...
只需使用限制条款
…您在
$news=array()中的第一行缺少分号
。从函数get_all_news\u home
中获取$news
变量的位置?也可以直接使用LIMIT子句跳过表中的前4条新闻。$news未在模型函数中定义。将这些传递给函数我编辑了代码。.如何使用限制
$last_news_query = $this->db->query("SELECT * FROM News WHERE Type = 1 AND Ready='Y' ORDER BY Date DESC LIMIT 0,4");
$all_news = $this->db->query("SELECT * FROM News WHERE News.Ready = 'Y' AND News.ID NOT IN ('$news') ORDER BY Date DESC LIMIT 4,12");