Sometimes when coding or debugging in PHP, it’s helpful to see the entire contents of an array. An easy way to do this is with the print_r command. To make it more readable, wrap it in <pre> tags.
For example, to see the contents of associative array $FormData:
<pre><?= print_r($FormData) ?></pre>
You’ll see output like this:
Array ( [CustomerId] => 2 [Rating] => 5 [DateOfBirth] => 01/01/1970 [FirstName] => John [LastName] => Smith [Address1] => 1 Main St [Address2] => [City] => Santa Monica [State] => CA [PostalCode] => 90201 [PhoneNumber] => ) 1