在while循环之外使用数据

Question

I am using this code which calls the period_id :

$cart = $this->GetUserCart();
$dataset = array();
while ($data = $cart->fetch_array()) {  
    $dataset[] = $data['period_id'];
}

so I need to implode the result so they can be separated by comma

$p = implode(",",$dataset);

So in the usercart function will call for example, 3 distinct period_id

so I need to finish like this :

$p='2,5,3';

Answer 1

Your code is correct. Maybe you just have to echo it.

$dataset = array();
while ($data = $cart->fetch_array()) {  
    $dataset[] = $data['period_id'];
}

$p = implode(',', $dataset);
echo $p; //you just need to echo it

Answer 2

I think if

        $p = implode(",",$dataset);

if $dataset = array("1", "5", "3");

when you echo $p ; //output will be 1,5,3 echo $p ; //output will be 1,5,3

put if you add this :

       $p = "'".implode(",",$dataset)."'";
       echo $p ; //output will be '1,5,3' 

and that is what you need if i understand you so

       $p = '1,5,3';