README.md

php-skills-test

Answer to skills test from an interview.

Question 1

Given the following example data structure. Write a single function to print out its nested key value pairs at any level for easy display to the user.

array (  
	array (
		'guest_id' => 177,
		'guest_type' => 'crew',
		'first_name' => 'Marco',
		'middle_name' => NULL,
		'last_name' => 'Burns',
		'gender' => 'M',
		'guest_booking' => array (  
			array (
				'booking_number' => 20008683,
				'ship_code' => 'OST',
				'room_no' => 'A0073',
				'start_time' => 1438214400,
				'end_time' => 1483142400,
				'is_checked_in' => true,
			),
		),
		'guest_account' => array (  
			array (
				'account_id' => 20009503,
				'status_id' => 2,
				'account_limit' => 0,
				'allow_charges' => true,
			),
		),
	),
	array (
		'guest_id' => 10000113,
		'guest_type' => 'crew',
		'first_name' => 'Bob Jr ',
		'middle_name' => 'Charles',
		'last_name' => 'Hemingway',
		'gender' => 'M',
		'guest_booking' => array (  
			array (
				'booking_number' => 10000013,
				'room_no' => 'B0092',
				'is_checked_in' => true,
			),
		),
		'guest_account' => array (  
			array (
				'account_id' => 10000522,
				'account_limit' => 300,
				'allow_charges' => true,
			),
		),
	),
	array (
		'guest_id' => 10000114,
		'guest_type' => 'crew',
		'first_name' => 'Al ',
		'middle_name' => 'Bert',
		'last_name' => 'Santiago',
		'gender' => 'M',
		'guest_booking' => array (  
			array (
				'booking_number' => 10000014,
				'room_no' => 'A0018',
				'is_checked_in' => true,
			),
		),
		'guest_account' => array (  
			array (
				'account_id' => 10000013,
				'account_limit' => 300,
				'allow_charges' => false,
			),
		),
	),
	array (
		'guest_id' => 10000115,
		'guest_type' => 'crew',
		'first_name' => 'Red ',
		'middle_name' => 'Ruby',
		'last_name' => 'Flowers ',
		'gender' => 'F',
		'guest_booking' => array (  
			array (
				'booking_number' => 10000015,
				'room_no' => 'A0051',
				'is_checked_in' => true,
			),
		),
		'guest_account' => array (  
			array (
				'account_id' => 10000519,
				'account_limit' => 300,
				'allow_charges' => true,
			),
		),
	),
	array (
		'guest_id' => 10000116,
		'guest_type' => 'crew',
		'first_name' => 'Ismael ',
		'middle_name' => 'Jean-Vital',
		'last_name' => 'Jammes',
		'gender' => 'M',
		'guest_booking' => array (  
			array (
				'booking_number' => 10000016,
				'room_no' => 'A0023',
				'is_checked_in' => true,
			),
		),
		'guest_account' => array (  
			array (
				'account_id' => 10000015,
				'account_limit' => 300,
				'allow_charges' => true,
			),
		),
	),
);

Question 2

Given the above example data structure again. Write a PHP function/method to sort the data structure based on a key OR keys regardless of what level it or they occurs with in the data structure ( i.e. sort by last_name AND sort by account_id ). HINT: Recursion is your friend.