Online PHP editor | output for YdjFR

<?php $user_data = [ 'one' => 'one value', 'two' => 'another value' 'three' => 'last value' ]; $fields = [ 'field1' => 'Name', 'field2' => 'Street' ]; $fields_position = [0, 3]; $values = [ 'John', 'Doe', '555 23 58 45', 'Evergreen Terrace' ]; foreach($fields_position as $idx => $pos) { $index = $fields[$idx]; $user_data[$index] = $values[$pos]; } /* The result of $user_data must be [ 'one' => 'one value', 'two' => 'another value' 'three' => 'last value' 'field1' => 'John', 'field2' => 'Evergreen Terrace' ]. Because in 0 position of $values is John and in 3 position is 'Evergreen Terrace' */ var_dump($user_data);