php中的多个数组

Question

I wanted to combine three arrays inside a foreach,

$topic = explode(',',$data->topic);
$description = explode(',',$data->description);
foreach (array_combine($topic, $description) as $topic => $description) 
{
  echo $topic;
  echo $description;
}

Which is working for two arrays, but I want for three arrays, because I want to pass $id = explode(',',$data->id); also in the same array which is not possible using array_combine, can anyone help by passing three arrays inside same foreach?

Answer 1

If the ID, topic and description are all in the correct order in each comma delimited string you are supplying to the script, you could use the following to create a single array key'd by the ID:

$id = explode(',',$data->id);
$topic = explode(',',$data->topic);
$description = explode(',',$data->description);

foreach($id as $key=>$val)
{
    $results[$val]['topic'] = $topic[$key];
    $results[$val]['description'] = $description[$key];
}