How to echo or print an array in PHP?

To see the contents of array you can use.

1) print_r($array); or if you want nicely formatted array then:

echo '<pre>'; print_r($array); echo '</pre>';

2) use var_dump($array) to get more information of the content in the array like datatype and length.

3) you can loop the array using php's foreach(); and get the desired output. more info on foreach in php's documentation website:
http://in3.php.net/manual/en/control-structures.foreach.php

This will do

foreach($results['data'] as $result) {
    echo $result['type'], '<br>';
}

If you just want to know the content without a format (e.g. for debuging purpose) I use this:

echo json_encode($anArray);

This will show it as a JSON which is pretty human readable.