Add key and value array to array multidimensional - arrays

Question

I want to add key and value form array multidimensional to other array multidimensional. I have 2 array multidimensional, this is:
$data1 = array(
array('id' => 1, 'name' => 'Dani'),
array('id' => 2, 'name' => 'Maachan'),
);
$data2 = array(
array('id' => 2, 'class' => 'Informatics'),
);
I want to join that's 2 array multidimensional to a array multidimensional with "id" in $data1 has some value "id" in $data2 like this:
$dataResult = array(
array('id' => 1, 'name' => 'Dani', 'class' => ''),
array('id' => 2, 'name' => 'Maachan', 'class => 'Informatics'),
);
I hope you can help me, thank you.

Answer 1

This works
$data1 = array(
array('id' => 1, 'name' => 'Dani'),
array('id' => 2, 'name' => 'Maachan'),
);
$data2 = array(
array('id' => 2, 'class' => 'Informatics'),
);
//first lets sort out data2
$new_data2 = array();
foreach($data2 as $d){
$new_data2[$d['id']] = $d['class'];
}
$new_data1 = array();
//now lets create a final array
foreach($data1 as $d){
$d['class'] = array_key_exists($d['id'], $new_data2) ? $new_data2[$d['id']] : '' ;;
$new_data1[] = $d;
}
echo '<pre>';
print_r($new_data1);
echo '</pre>';