Online PHP editor | refs for 2KcSN

<?php $data = [ [ 'Access ID' => 12345, 'Registration Date' => '2018-02-27', 'First Name' => 'Damian', 'Last Name' => 'Martin', 'Flying Tour' => '' ], [ 'Access ID' => 12345, 'Registration Date' => '2018-02-27', 'First Name' => 'Damian', 'Last Name' => 'Martin', 'Flying Tour' => 'Yes going' ], [ 'Access ID' => 789456, 'Registration Date' => '2018-03-27', 'First Name' => 'Ricky', 'Last Name' => 'Smith', 'Flying Tour' => '' ], [ 'Access ID' => 789456, 'Registration Date' => '2018-03-27', 'First Name' => 'Ricky', 'Last Name' => 'Smith', 'Flying Tour' => 'Two way going', ], [ 'Access ID' => 987654, 'Registration Date' => '2018-04-27', 'First Name' => 'Darron', 'Last Name' => 'Butt', 'Flying Tour' => '' ] ]; $results = []; foreach ($data as $input) { if (!isset($results[$input['Access ID'] . '_' . $input['First Name'] . '_' . $input['Last Name']])) { $results[$input['Access ID'] . '_' . $input['First Name'] . '_' . $input['Last Name']] = $input; } else { if ($results[$input['Access ID'] . '_' . $input['First Name'] . '_' . $input['Last Name']]['Flying Tour'] == '') { $results[$input['Access ID'] . '_' . $input['First Name'] . '_' . $input['Last Name']] = $input; } } } $results = array_values($results); print_r($results);