PHP连接和区分？

Question

I am using this code to get id from database:

$selected_event_ids .= $get_event_id; 

and the coming output is:1149

but we want the output like: 11,4,9

Answer 1

try this

for() { // in loop
    $selected_event_ids[] = $get_event_id;
}

echo implode(',',$selected_event_ids);