Dataset Example Row:

0_id			: 25
0_firstname		: Slyvester
0_lastname		: Oosterbos
1_id			: 91
1_email			: sly@whatever.com
2_id			: 266
2_telephone		: 09987 787424
3_id			: 33
3_studentid		: 77942421
3_schemeofstudy		: 71
4_id			: 101
4_projtitle		: Writing a Recursive Function!


Desired result:

array(
  [0] => array (
    [0] => array(
      'id' => 25,
      'firstname' => Slyvester,
      'lastname' => Oosterbos,
      'childtables' => array(
         [1] => array(
	   'id' => 91,
	   'email' => sly@whatever.com
	   ),
	 [2] => array (
	   'id' => 266,
	   'telephone' => 09987 787424
	   ),
         [3] => array(
	   'id' => 33,
           'studentid' => 77942421,
	   'schemeofstudy' => 71,
	   'childtables' => array(
		[4] => array (
   		  'id' => 101,
		  'projtitle' => Writing a Recursive Function!
		)
	    )
        )
     )
  )



Array Key Tree

array (
	[0] => array (
		[1] => true,
		[2] => true,
		[3] => array (
			[4] => true
		)
	)
)