CodeIgniter Select Query

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刺人心
刺人心 2020-12-10 04:37

I have a simple CodeIgniter Active record query to select an ID:

$q = $this -> db
           -> select(\'id\')
           -> where(\'email\', $email         


        
10条回答
  •  春和景丽
    2020-12-10 05:24

    Thats quite simple. For example, here is a random code of mine:

    function news_get_by_id ( $news_id )
    {
    
        $this->db->select('*');
        $this->db->select("DATE_FORMAT( date, '%d.%m.%Y' ) as date_human",  FALSE );
        $this->db->select("DATE_FORMAT( date, '%H:%i') as time_human",      FALSE );
    
    
        $this->db->from('news');
    
        $this->db->where('news_id', $news_id );
    
    
        $query = $this->db->get();
    
        if ( $query->num_rows() > 0 )
        {
            $row = $query->row_array();
            return $row;
        }
    
    }   
    

    This will return the "row" you selected as an array so you can access it like:

    $array = news_get_by_id ( 1 );
    echo $array['date_human'];
    

    I also would strongly advise, not to chain the query like you do. Always have them separately like in my code, which is clearly a lot easier to read.

    Please also note that if you specify the table name in from(), you call the get() function without a parameter.

    If you did not understand, feel free to ask :)

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