php - Remove elements in a row of an array

I'm developing an API which produces results in JSON format, when I encoded results into JSON using PHP, it shows every element in the row of the array. I use MySQL to grab data.

foreach($search as $item) {
    echo json_encode($item);
}

This will output

{"id":"1","name":"A","tag":"a A","url":"A"} {"id":"2","name":"B","tag":"b B","url":"B"}

Is there a way to dump TAG element so it won't appear in JSON encoded results?

Answer

foreach($search as $item) {
    unset($item['tag']);
    echo json_encode($item);
}

you can do it by unset()