Get all fields of the page that are of certain use type:

date Date

time Time

date time Exact date and time

amount Countable value

contact Contact information

location Location data

reference Reference to another page

Return value

Array Array of Field

Arguments

$usetype

1. String: Comma delimited list of use types

2. Array: List of use types

Full documentation

Show all contact information from order: (phone, email, address...)

foreach ( $Order->getFieldsByUse('contact') as $Field ){
    $txt .= "<p>{$Field->getTitle()}: {$Field->getValue()}</p>";
}