Question

我尝试在CodeIgniter中创建一个动态变量。我有一个模型从数据库中获取数据并在视图中显示它。通常它会是这样的 $ data ['query'] = $ this-＆gt; mdl_store_accounts-＆gt; get（'id'）; 并使用$ query访问数据对象。

但这是我想在下面实现的目标。我在一个循环中传递变量（a到e）代替（查询）。

function manage()
{
    $query = $this->mdl_store_accounts->get('id');
    $sport = $query->row('sport');
    $slots = $query->row('slots');

    $_start = 1;
    $_end = 4;
    $q = 1; 
    for ($z='a'; $z <= 'e' ; $z++) { 
        if ($sport == $q) {
            // echo $q; die();
            $available_slot = $slots * ($sport - 1) ;  //slots used and available slot calculation to get next range
            $_start = $available_slot + 1 ;  //slots used and available slot calculation to get next range
            $_end = $available_slot + 3;
            // echo $start . ' and ' . $end; die();
            $data[$z] = $this->mdl_courses->_custom_query('SELECT * from courses WHERE id BETWEEN '.$_start.' AND '.$_end.' ORDER BY rand()');
        } elseif($q == 1 and $q !== $sport) {
            $_start = 1 ;  //slots used and available slot calculation to get next range
            $_end = 4;
            $data[$z] = $this->mdl_courses->_custom_query('SELECT * from courses WHERE id BETWEEN '.$_start.' AND '.$_end.' ORDER BY rand()');
        } elseif($q == 2 and $q !== $sport) {
            $_start = 5 ;  //slots used and available slot calculation to get next range
            $_end = 9;
            $data[$z] = $this->mdl_courses->_custom_query('SELECT * from courses WHERE id BETWEEN '.$_start.' AND '.$_end.' ORDER BY rand()');
        }
        $q++;
    } }

在我的视图中使用动态变量访问它，就像这样;

$query = "$";
${$query . 'a'} = $a;
foreach ($a->result() as $rows) {
$query++;                                              
$a++;

我已经尝试了数组和这个$$ a。但没有工作。是收到错误类CI_DB_mysqli_result的对象无法转换为字符串。任何帮助将不胜感激

在CodeIgniter中创建动态变量

0 个答案: